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    Using market valuation to assess public

    school spending

    Lisa Barrowa, Cecilia Elena Rouseb,*

    a

    Economic Research Federal Reserve Bank of Chicago, Chicago, IL 60404, USAbFirestone Library, Industrial Relations Section, Princeton University, Princeton, NJ 08544, USA

    Received 19 June 2002; received in revised form 5 December 2002; accepted 15 December 2002

    Abstract

    We examine whether school expenditures are valued by potential residents and whether the

    current level of public school provision is inefficient by estimating the effect of state education aid on

    residential property values. We find evidence that, overall, state aid is valued by potential residents

    and that school districts do not overspend on education. However, we find that districts mayoverspend in areas where residents have fewer schooling options but find no difference in efficiency

    by the degree of district unionization. One interpretation of these results is that increased competition

    may reduce overspending on public schools in some areas.

    D 2003 Elsevier B.V. All rights reserved.

    JEL classification: I2; H4

    Keywords: School choice; Education spending; Efficiency; Competition; Tiebout

    1. Introduction

    An enduring question in education policy is whether spending additional resources

    on schools improves student outcomes. Some researchers point to evidence that

    schooling inputs, such as lower pupil teacher ratios, longer school terms, and more

    qualified teachers, improve test scores and wages (e.g., Card and Krueger, 1992;

    Angrist and Lavy, 1999; Finn and Achilles, 1990; Krueger, 1999). Others point to

    research that suggests improvements in school inputs, and expenditures in particular,

    do not result in higher student achievement (e.g., Betts, 1995; Hanushek, 1986;

    0047-2727/$ - see front matterD 2003 Elsevier B.V. All rights reserved.

    doi:10.1016/S0047-2727(03)00024-0

    * Corresponding author. Tel.: +1-609-258-4042; fax: +1-609-258-2907.E-mail address: [email protected] (C.E. Rouse).

    www.elsevier.com/locate/econbase

    Journal of Public Economics 88 (2004) 17471769

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    Hanushek et al., 1996). Many of these researchers also argue that teachers unions and

    bloated bureaucracies inhibit improved schooling inputs from generating better outputs,

    resulting in inefficiency in public school provision (Chubb and Moe, 1990; Hoxby,

    1996). Thus, it is the inefficiency in public school provision that interferes withadditional spending improving student outcomes. The typical approach in the existing

    literature is to estimate directly the relationship between schooling expenditures and

    student outputs, such as test scores or eventual wages. However, the importance of test

    scores to adult outcomes is unclear, and it is rare to be able to link schooling inputs

    to later outcomes because of the cost and difficulty in implementing long longitudinal

    surveys and the unreliability of asking retrospective information on schooling inputs in

    labor market surveys.

    An alternative approach to analyzing whether schools effectively use additional expen-

    ditures is to consider whether the market appears to value the spending, such as by

    examining the relationship between school spending and property values. In the U.S. the

    provision of elementary and secondary education is largely determined at the local level.

    Therefore, if individuals make residential choices based on their preferences for schooling,

    property values should reflect how schooling in an area is valued by potential residents (see,

    e.g., Barrow, 2002; Black, 1999).

    An advantage of considering the market valuation of spending is that it permits an

    assessment of the value of school spending using a more contemporaneous measure of

    (the perception of) the provision of schooling. In addition, one can assess whether

    schools receiving additional revenue are inefficient in their provision of education by

    testing whether a $1 increase in outside funding generates a (properly discounted) $1increase in housing values. On the one hand, as argued by Tiebout (1956), if

    individuals choose their residence based on the provision of public goods, then the

    optimal level of such public goods should be provided. By this argument, the

    provision of schooling in the U.S. may well be efficient because schools compete

    with one another through the residential housing market. This form of competition

    insures both allocative and productive efficiency as parents who would like a different

    kind or bundle of schooling can choose a different neighborhood, as can those who do

    not believe that the quality of schooling merits their tax dollars.

    On the other hand, there are several obstacles that may prevent the majority of school

    districts from achieving the optimal level of schooling. First, because it is costly tomove, parents may not be perfectly mobile or have perfect information about localities

    and the provision of education. In particular, low-income families may not be able to

    choose to move out of the inner-city in order to reside in a district providing their

    preferred level of education. In addition, a Tiebout equilibrium requires that parents have

    a choice of different kinds of communities. Over the past 20 years many states have

    centralized education finance to improve equity in the provision of schooling (Kenny

    and Schmidt, 1994), housing discrimination limits the choices of some individuals (e.g.,

    Yinger, 1998), and choices are more limited in communities with only a few school

    districts. Each of these factors may limit the ability of parents to choose their preferred

    provision of schooling.In this paper we adopt a market-based approach to examine both whether additional

    spending on schools appears to increase school outputs, as perceived by the housing

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    market, and whether public schools are inefficient. Because most of the debate surround-

    ing school finance in the U.S. is implicitly about whether current spending is too high,1 we

    focus on testing whether the current level of public school provision is inefficiently high.

    We consider efficiency for the situation in which local school spending continues to befinanced (primarily) by a property tax as occurs in the majority of school districts in the

    U.S. In this case, housing choices may be distorted by the property tax. Nevertheless, if

    families have the option of choosing to send their children to the school of their choice,

    communities may still achieve the second-best schooling optimum. Therefore, we test for

    whether the current level of school spending is efficient conditional on the inefficiency

    induced by the property tax.

    In order to evaluate effectively the question of the efficiency of school spending, we

    have assembled a rich and unique set of data on school districts. Our data sources

    consist of both original data collected from state tax and education agencies as well as

    various Census data. We find evidence that, on net, additional school spending leads to

    increased property values, suggesting that additional expenditures may improve student

    outcomes. In addition, we find that, on net, the current level of funding of public school

    districts is not inefficiently high. That said, we find evidence of differences in the

    valuation of spending across school districts. Particularly, we find that school districts

    may overspend in large school districts, in those facing less competition, in primarily

    rental property districts, and in areas in which residents are poor or less educated. In

    contrast, we find no evidence that unionized districts spend beyond the optimal level,

    thereby spending education dollars inefficiently. One interpretation of these results is that

    increased competition has the potential to reduce overspending on public schools insome areas.

    The rest of the paper is organized as follows. Section 2 outlines the theoretical model

    upon which we base our statistical tests for the efficiency of school spending, Section 3

    explains our empirical strategy, Section 4 describes our data, Section 5 contains results and

    Section 6 concludes.

    2. A (highly) stylized model of public good valuation

    2.1. Basic model

    Our market-based approach for assessing public school spending is based on

    Brueckners bid-rent model of property value determination (Brueckner, 1979;

    Brueckner, 1982; Brueckner, 1983). The result derived from this model is that

    efficient public good provision occurs at the level that maximizes aggregate property

    value. In the bid-rent model of the housing market, consumers are assumed to have

    1 For example, many who argue that the public provision of schooling in the U.S. is likely inefficient note

    that during the 1963 64 school year the government spent $2609 per pupil (in 1995 dollars), compared to $6459

    per pupil spent during 199596, an increase of over 147 percent (Digest of Education Statistics, 1996), without

    comparable increases in student achievement.

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    identical preferences, and their utility depends on the level of schooling provided, E;

    other local public goods, G; housing units, H; and the numeraire good, B. All residents

    in a community consume the same level of the public goods, Eand G. Costless

    mobility is assumed such that consumers with the same level of income must achievethe same utility level.2 As a result, house prices (rents) adjust to insure that residents

    are indifferent between different houses. Formally, a resident with income Iachieves

    utility hI and her consumption bundle must satisfy

    UE; G; H; B hI: 1

    This equality is guaranteed since if a consumer could achieve higher utility elsewhere,

    she would move. A residents budget constraint can be written as B R I, where Rrepresents the rent paid for housing and the price ofB is normalized to 1. Then, R

    must satisfy UE; G; H; I R hI. This equation determines the bid-rent function

    R RE; G; H; I: 2

    The bid-rent function specifies the rent necessary to equalize an individuals utility

    across differing residences. Differentiating Eq. (2) with respect to Egives

    REE; G; H; I UEE; G; H; I R

    UBE; G; H; I R; 3

    where subscripts denote partial derivatives. Eq. (3) shows that the required change in

    the rent resulting from a change in Eis equal to the marginal rate of substitutionbetween education and the numeraire good, B. Similarly, the required change in the

    rent resulting from a change in Gis equal to the marginal rate of substitution between

    the other public goods and B.

    Next, assume that local revenues for schooling are financed exclusively by a residential

    property tax rate, tE, and the other public goods by a residential property tax, tG. The

    property tax rates are applied to both land and improvements to ensure that the choice of

    housing-factor inputs is not distorted. Letting d be the discount rate, the value of an

    individual house i is

    Pi R tE tG Pi

    d

    RE; G; Hi; Iid tE tG

    : 4

    The aggregate value of housing property is defined as the sum of the individual property

    values within a community:

    PXNi1

    Pi XNi1

    RE; G; Hi; Ii

    d tE tG; 5

    where Nis the number of houses in the community.

    2 We could also allow for heterogenous preferences, in which case residents with the same preferences and

    income would have to achieve the same level of utility.

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    Assuming that the state contributes amountSto local school districts (the local

    community fully finances the other public goods, G, for simplicity), the community budget

    constraint is

    tE tG P CEE; N S CGG; N; 6

    where CEand CGare (convex) cost functions forEand G. The fact that cost is a

    function of the community size, N, reflects potential congestion costs. Combining Eqs.

    (5) and (6) gives

    P1

    d XN

    i1

    RE; G; Hi; Ii CEE; N S CGG; N

    " #: 7

    Aggregate property values are a function of the aggregate rents, state aid, the discount

    rate, and the production costs of education and the other public goods. Differentiating

    Eq. (7) with respect to the state aid and assuming that changes in state money for

    education have no effect on the provision of other public goods, i.e. AG=AS 0,yields

    AP

    AS

    1

    d XN

    i1

    REE; G; Hi; Ii CEEE; N

    " #AE

    AS

    1

    d; 8

    where, as shown in Eq. (3), REis equal to the marginal rate of substitution between

    education and the numeraire good, B. As a result, Eq. (8) establishes thatAP=AS1=d when the Samuelson condition for the optimal provision of education issatisfied, i.e., the sum of the marginal rates of substitution between education and

    the numeraire equals the marginal cost of providing education. (A similar condition

    holds for all other public goods as well.) Assuming thatR is a strictly concave

    function ofEand Gand thatCEis convex in Eand G, it follows thatPin Eq. (7) is

    strictly concave in Eand G. As a result, aggregate property value reaches a global

    maximum at values ofEand Gwhere the Samuelson condition holds, ceteris paribus.Thus, one can determine whether education is under-provided or over-provided relative

    to the property value maximizing level as AP=AST1=d. Note that under- or over-provision of education may result either from productive or allocative inefficiencies.

    One might conclude that education is over-provided in a district in which the right

    level of education is being provided but the district is not cost minimizing.

    Alternatively, the district may be productively efficient but not provide the property

    value-maximizing level of education.

    Because the null hypothesis on the coefficient of interest, that on state school

    aid, depends on the discount rate, we use two rates in constructing our hypothesis

    tests regarding school efficiency: 7.33 percent, which is the average real 30-yearconventional mortgage rate from 1980 to 1990, and the lower risk return of 5.24

    percent, which is the average real 30-year Treasury bond yield from 1980 to

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    1990.3 In addition, we adjust these discount rates for the average marginal U.S.

    income tax rates between 1979 and 1989.4

    2.2. Discussion of assumptions and omissions

    The result above derives from a number of rather strong assumptions and omissions

    that may not hold in reality. In this section we include a brief discussion of two of these

    issues. We refer the interested reader to Barrow and Rouse (2002) for a more complete

    discussion of these and other assumptions.

    2.2.1. AG=AS 0First, we assume that state spending on education does not affect the provision of other

    public goods. From the standpoint of basic economic theory this assumption seems

    unrealistic since funding is fungible, and if a district receives aid from the state, the

    equivalent to an increase in income, then the share devoted to education should be equal to

    the marginal propensity to spend out of income (which would be about 510 cents on the

    dollar; Hines and Thaler, 1995).

    Nevertheless, we believe the assumption is not unrealistic in our case because we

    limit our analysis to independent school districts, about 92 percent of all elementary

    and secondary school districts in the U.S. (1992 Census of Governments, Government

    Finances). Independent school districts, as defined by the Census of Governments, are

    fiscally and administratively independent of other government entities, such as town-

    ships and counties, and thus are considered governments themselves. Dependent schooldistricts, on the other hand, are dependent on a parent government. The parent

    government of a dependent school district has the ability to shift public expenditure

    among various public goods, whereas independent districts provide education and are

    unable to spend revenues on public goods other than education. As a result, any state

    aid received by an independent district either must be spent on the provision of

    education or rebated to residents in the form of a tax rate reduction. Thus, only

    indirectly may increased state aid lead to an increase in the provision of other public

    goods in the county or township in which the school district is situated (because the

    reduction in school taxes can be off-set by an increase in taxes to fund other public

    goods).5

    3 The nominal mortgage rate is from the Federal Home Mortgage Corporation (obtained from the Federal

    Reserve Board of Governorshttp://www.bog.frb.fed.us/releases/h15/data/a/cm.txt). The nominal 30-year

    Treasury bond yield (constantmaturity) is from the U.S. Treasury Department (obtained from the Federal

    Reserve Board of Governorshttp://www.bog.frb.fed.us/releases/H15/data/a/tcm30y.txt). We use the personal

    consumption expenditure price index to calculate the real rates.4 We calculate the marginal tax rate for 1979 to 1989 using the average income in the our sample for 1980

    and inflating to current dollars for the subsequent years. The marginal tax rate we use is the average of these tax

    rates over the 11 years. This average marginal tax rate is 26.7%.5 We examined this issue empirically by considering the relationship between county-level expenditures on

    other public goods and state aid for education. We found thatAG=AS 0 seems to hold for the independentschool districts examined in this paper while AG=AS> 0 seems to apply to dependent districts that can moreeasily shift expenditures between budget categories.

    L. Barrow, C.E. Rouse / Journal of Public Economics 88 (2004) 174717691752

    http://%20http//www.bog.frb.fed.us/releases/h15/data/a/cm.txthttp://%20http//www.bog.frb.fed.us/releases/h15/data/a/cm.txthttp://%20http//www.bog.frb.fed.us/releases/h15/data/a/cm.txthttp://%20http//www.bog.frb.fed.us/releases/h15/data/a/tcm30y.txthttp://%20http//www.bog.frb.fed.us/releases/h15/data/a/tcm30y.txthttp://%20http//www.bog.frb.fed.us/releases/h15/data/a/tcm30y.txthttp://%20http//www.bog.frb.fed.us/releases/h15/data/a/tcm30y.txthttp://%20http//www.bog.frb.fed.us/releases/h15/data/a/cm.txt
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    2.2.2. Business property

    The model specified above also omits business property from consideration.6 Empir-

    ically, we do not include business property in our estimation because data are not available

    for most states. However, when we include it (along with other types of property, such aspersonal property) for the (few) states for which we have the data, it has not changed the

    estimated coefficients substantially. As a result, we conclude that our treatment of

    commercial property is unlikely to have a large effect on our conclusions about education

    spending.

    3. Empirical framework

    Based on the theoretical framework, we estimate the following reduced-form equation:

    Pjcst a0 Xjcsta1 Hjcsta2 Wcsta3 bSjcst nj ejcst; 9

    where Pjcstis the aggregate house value per pupil in school districtj, in county c, in state s,

    and yeart, Xjcstare a set of demographic characteristics about the districts population, Hjcstare characteristics of the housing stock of the district, Wcstare county characteristics, and

    Sjcstis state revenue per pupil for education spending. njis a district fixed-effect and ejcstis

    a normally distributed random error term.

    b is a coefficient that represents the efficiency of school district spending on education.

    In response to receiving an additional dollar of state aid, local school districts may take

    several actions. A district facing expenditure constraints might increase educationspending by the entire dollar; an unconstrained district might reduce local property taxes

    while simultaneously increasing education spending by less than $1. The estimate ofb

    captures school district efficiency by summarizing the total effect on property values of

    allowing school districts to adjust on both the tax and spending margins. One implication

    is that we do not control for tax rates in this equation.

    By far the most difficult empirical challenge to overcome is to control for all

    characteristics that are correlated with state schooling revenue and housing values as

    omitted factors may bias the results. In the 1970s many states relied on categorical aid to

    fund education. During this time, state revenue was primarily determined by a flat grant

    per pupil or by a flat grant in which the pupil count was weighted by the characteristics of

    the students in each school district (such as grade level, special education needs, and

    transportation). Between the 1970s and the 1990s many states changed their formulas in

    order to equalize education funding across rich and poor districts. Many of the formulas

    now incorporate the wealth of the district measured as property value per pupil, such that

    property-rich districts receive less state aid while property-poor districts receive more.7 As

    a result, while the relationship between district state funding per pupil and district assessed

    valuation per pupil was relatively flat in 1980, the relationship has become more

    7 This is a very broad generalization. See Card and Payne (1997), Evans et al. (1997), Murray et al. (1998)

    for more details on state financing plans.

    6 In 1986, approximately 61 percent of gross assessed valuation was due to residential (nonfarm) property

    (1987 Census of Governments, Taxable Property Values).

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    negatively sloped in 1990 for states that have made equalizing changes to their state

    financing formulas.8

    Fig. 1 depicts predicted total state aid per pupil in 1980 and 1990 versus aggregate

    house values per pupil in 1980 for Colorado and West Virginia. Each graph also includes

    regression fitted values from regressing predicted total state aid per pupil in each year on

    aggregate house values per pupil in 1980. Colorado is an example of a state in which state

    Fig. 1. Predicted state aid per pupil in 1990 and 1980 versus aggregate residential property value per pupil in

    1980. Note: both 1980 and 1990 state aid are predicted from the state school financing formulas using thecharacteristics of the districts in 1980. All values are in 1994 dollars per pupil.

    8 We have modeled which states change their financing formulas and which states adopt more or less

    equalizing formulas by aggregating our data to the state level and estimating binary and multinominal logit

    models. While we found some evidence that the average state household income and/or property values may

    partially determine state behavior, the evidence was neither overwhelming nor systematic.

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    school aid was made more equalizing. In 1980, the slope of the regression fitted line is

    relatively flat while in 1990 the slope of the regression fitted line is more negative,

    indicating that property-poor districts are getting more aid per pupil than wealthier

    districts. While West Virginia adopted a more generous school financing formula in1990, as evidenced by the upward shift in the regression fitted line in 1990, the state did

    not adopt a formula that increased the degree of equalization between 1980 and 1990. This

    is evidenced by the slopes of the regression fitted lines remaining relatively similar. West

    Virginias school financing formula generates some equalization, however, as can be seen

    by the negative relationship between predicted state aid per pupil and aggregate house

    values per pupil.

    Because moving toward greater equalization is likely to result in districts with declining

    property values receiving greater increases in state aid per pupil, we expect that the

    coefficient estimate on changes in state aid will be negatively biased. We attempt to address

    this potential problem in three ways. First, we control for a variety of district and county

    characteristics that may be correlated with education provision and district property values.

    For example, we include demographic characteristics of the district as well as the county

    crime rates. These measures vary over time as well. Second, we focus on estimates that

    contain school district fixed-effects (which we implement through first-differenced equa-

    tions). This allows us to parcel out any time-invariant features of districts that may be

    correlated with state education revenues and house values (such as distance to employment

    centers, climate, and relatively stable characteristics about the student and local populations).

    Third, we instrument for changes in state education revenue with changes in the state

    school financing formulas. To construct our instrument, we first programmed each statesfinancing formulas in effect in 197879 and 199091. We then calculated the amount of

    both the basic state aid and the total state aid that each district should have received

    according to our computer programs in 1980 and 1990.9 Total state aid includes basic

    state aid (usually the foundation amount) plus some additional components such as aid for

    special and vocational education. In order to minimize the effect of changing district

    characteristics on our calculations of the 1990 state aid, we estimate the amount of state aid

    in 1990 using the formulas from 1990 and the district characteristics in 1980. (The

    estimated amount of state aid in 1980 is constructed using the 1980 formulas and the

    district characteristics in 1980.) We refer to this instrument as the predicted state aid.10

    The disadvantage of the predicted state aid instrumental variables strategy is that it relieson the assumption that changes in district housing values are not correlated with district

    characteristics in 1980 (which we use to construct the instrumental variable). To the extent

    10 Unlike instrumental variables used in many recent works (see Card, 1995, for some examples), we do not

    have an a priori reason to think that our instrument will affect certain districts more than others. Our instrumental

    variable is designed to recover changes in state school finance formulas which affect all districts. An empirical

    investigation of this issue is available from the authors on request.

    9 We predict the amount of state aid that each district receives according to the formulas as described in the

    Public School Finance Programs (1978, 1990). In some states we also supplemented these descriptions of the

    formulas with additional information from the states or from the state statute when necessary. We used total

    assessed valuations by district nationwide in 1980 and 1990 (which we collected) to determine the amount of state

    aid. The correlation between our prediction of total state aid and the actual level of state aid is 0.39 in 1980, and

    0.53 in 1990 if the 1990 district characteristics are used and 0.33 if the 1980 district characteristics are used.

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    that 1980 to 1990 changes in residential housing values are correlated with district

    characteristics in 1980, the instrumental variables results may be inconsistent.11

    We also note that our strategy is to include an array of district and county characteristics

    to proxy for the districts underlying cost function for education, rather than to controldirectly for education costs. We do so for two reasons. First, education costs (as opposed to

    expenditures) are inherently more difficult to observe, and second, if we use education

    expenditure as a proxy for local education cost, we do not have a strategy for addressing the

    endogeneity of local education expenditure in addition to state aid. Many state school

    financing formulas calculate a total amount of school financing need for each district

    based on pupil counts in the district. One common feature of this portion of the formulas is

    to assign different weights to different types of pupils in generating a total pupil count. More

    specifically, the formulas give more weight to pupils that are more costly to educate, such as

    students with special education needs. As a consequence, this feature of the formulas will

    induce some positive correlation between local education costs and state aid. Given that

    state aid is negatively correlated with property values, our IV estimates may be downward

    biased to the extent to which we have not properly proxied for local education costs.12

    4. Data

    For most of our empirical analysis we use data from the 1980 and 1990 decennial census

    school district data files, the 1977 and 1987 Census of Governments, and the USA Counties

    1996CD-ROM. In order to generate our instrumental variables, we have also merged these

    data with data we collected on tax rates and the total assessed valuation (adjusted to marketvalue both by the statutory assessment ratio and assessment-to-sales ratios where possible)

    by school district from 1980 and 1990.13 The unit of observation is an independent school

    district. As a result, we drop all school districts from the following statesAlaska, District

    of Columbia, Hawaii, Maryland, North Carolina, and Virginiain which there are no

    independent districts. We also lose most districts in Connecticut, Massachusetts, Rhode

    Island, and Tennessee in which the majority of school districts are dependent on a parent

    government.

    In addition, we limit the sample to unified school districts that did not change between

    1980 and 1990 (that is, they did not merge or split apart). We exclude districts in California

    because we could not obtain property value data with which to model the school financingformulas. We also exclude school districts with zero enrollment in either 1980 or 1990,

    11 To assess these results, we have also constructed instrumental variables by predicting state aid using

    synthetically constructed districts. In general, the results generated using the synthetically predicted state aid are

    similar to those using the predicted state aid, suggesting that any potential bias in our preferred instrument may

    not significantly change the results. See Barrow and Rouse (2002) for more information.12 If we additionally control for total or local expenditure per pupil our results are very similar.13 Note that the dependent variable in our regressionsaggregate residential property values per pupilis

    from the 1980 and 1990 decennial censuses. This measure of aggregate property value for a school district equals

    the sum of aggregate owner-occupied house values and an estimate of the asset value of the rental property

    derived from aggregate gross rent. Further, we use the pupil measure from the Census of Governments rather than

    the pupil measure from the Census of Population for our dependent variable to avoid measurement error induced

    bias in our coefficient estimate.

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    and those for whom we are missing data on our instruments and aggregate property values.

    The final analysis sample includes 9076 observations, about 92 percent of all independent,

    unified school districts, 95 percent of all students in independent, unified school districts,

    and 61 percent of all elementary and/or secondary districts in existence in 1991 based on

    the 1992 datafile from the Census of Government Finances. A more detailed description of

    the data is available from the authors upon request.Means of selected school district characteristics in 1980 and 1990 are presented in

    Table 1. On average, aggregate house values per pupil increased by 40 percent between

    1980 and 1990. State aid per pupil also increased from 1980 to 1990 (63 percent) arising

    from both increases in total state aid as well as declining enrollment over the time period.

    5. Empirical analysis

    5.1. Ordinary least squares estimation (OLS)

    In Table 2 we present ordinary least squares (OLS) estimates of the cross-sectional

    relationship between aggregate residential property value per pupil and state aid for

    Table 1

    Means and standard deviations

    Mean S.D.

    School district characteristicsChange in aggregate residential property

    value per pupil ($1000s) 51.274 104.653

    Change in actual state aid per pupil 1053.516 817.188

    Change in predicted basic aid per pupil 1120.730 1661.020

    Change in predicted total aid per pupil 1147.038 1719.297

    Change in average household income ($1000s) 2.377 6.411

    Change in % population with at least

    16 years of education 3.835 2.975

    Change in % housing units owner occupied 1.307 3.821Change in % children enrolled in private school 2.603 3.176

    Change in total housing units (1000s) 6.424 24.280

    Change in enrollment (1000s) 3.768 16.212Change in % households in urban areas 1.296 7.514

    County characteristics

    Change in crime index 348.994 1352.677

    % Missing change in crime index 0.766 8.718

    Change in % voting Republican 13.432 6.854Change in % voting Democratic 0.639 6.741

    Change in % county employees organized 1.558 20.905

    % Missing change in county employees organized 3.122 17.394

    Change in % employed in manufacturing 4.324 24.713

    Notes: there are 9076 observations. All dollar values are in 1994 dollars. All means are weighted by studentenrollment in 1980. Changes in predicted state aid are calculated using the state school financing formulas and

    the 1980 characteristics of school districts.

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    education per pupil in 1980 and 1990. The results from simple bivariate regressions

    are presented in columns (1) and (4); the remaining columns sequentially add district

    and then county characteristics and Census division indicators. We estimate a negative

    and statistically significant relationship between property values and state aid per pupil

    in columns (1) and (4) reflecting the redistributive intent of state education aid. The

    estimates in columns (2) and (5) include the levels for the relevant year of a quadratic

    in average household income, the percentage of the population with at least 16 years

    of education, the percentage of the population that is unemployed, the percentage ofhousing units that are owner occupied, the percentage of housing units that are vacant,

    the percentage of occupied housing units that were built more than 10 years ago, the

    Table 2

    Cross-sectional OLS estimates from 1980 and 1990 of the effect of state aid on aggregate house values per pupil

    1980 1990

    (1) (2) (3) (4) (5) (6)

    State aid per pupil 23.142 14.221 19.300 22.296 3.541 4.894(1.194) (0.911) (0.997) (1.271) (0.687) (0.718)

    Average household income 5.166 2.973 9.330 8.507

    (0.254) (0.292) (0.208) (0.222)

    Average household income 0.308 0.161 0.214 0.183squared divided by 10,000 (0.022) (0.023) (0.012) (0.012)

    % Population with at least 3378.585 3070.073 1505.819 1120.390

    16 years of education (143.937) (148.190) (148.548) (145.142)

    % Housing units owner 1460.617 1070.326 3155.466 2748.225occupied (81.191) (82.311) (119.514) (118.884)

    % Children enrolled in private 709.688 1050.040 3577.272 3535.423school (124.889) (127.135) (150.339) (144.972)

    Total housing units (1000s) 0.313 0.284 0.425 0.424

    (0.025) (0.026) (0.024) (0.025)

    Enrollment (1000s) 0.785 0.697 1.478 1.449(0.062) (0.064) (0.075) (0.075)

    % Households in urban areas 251.551 192.573 110.452 209.398

    (23.248) (25.010) (29.205) (29.324)

    P-value: state aid = 18.61

    (d 0:0733*1 mtra 0.000 0.000 0.000 0.000 0.000 0.000P-value: state aid= 26.03

    (d 0:0524*1 mtra 0.000 0.000 0.000 0.000 0.000 0.000

    R2 0.040 0.524 0.548 0.033 0.770 0.805

    Notes: the dependent variable is the aggregate residential property value per pupil in 1980 or 1990. Standard

    errors are in parentheses. There are 9076 observations. All equations include a constant. Columns (2) and (5) also

    include the percent unemployed, the percent of housing units that are vacant, the percent of occupied housing

    units built more than 10 years ago, the percent of households that moved into their house less than 10 years ago,

    and the percent of the population over 55 years of age; columns (3) and (6) include the variables included in the

    column (2) or (4) specification in addition to the variables listed under county characteristics in Table 1,

    indicators for the Census division of the school district and dummy variables indicating if the crime index or the

    percent of county employees that are unionized are missing. Columns (2), (3), (5), and (6) all include a dummy

    variable indicating whether the percent of the population that moved in 10 years ago is missing. The equations are

    weighted by student enrollment in 1980. All dollar values are in 1994 dollars.a

    d is the discount rate; mtr is the marginal tax rate. See text.

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    percentage of the population that moved into their house less than 10 years ago, the

    percentage of the population over 55 years of age, the percentage of children enrolled

    in private schools, total housing units in the district, public school district enrollment,

    and the percentage of housing units that are in urban areas. In columns (3) and (6) wealso add indicators for the districts Census division and the levels of the FBIs serious

    crime index, the percentage of voters that voted for the Republican candidate in the

    most recent presidential election, the percentage of voters that voted for the

    Democratic candidate in the most recent presidential election, the percentage of the

    county employees that are union members, and the percentage of workers employed in

    manufacturing.14 We expect that the coefficient estimates on changes in state aid per

    pupil will increase when the additional covariates are included.

    As expected, the coefficient estimates in columns (2) and (5) increase such that we

    estimate a $1 increase in state aid will decrease property values by $14 in 1980 and will

    increase property values by $3.5 in 1990, effects that are statistically significant. The

    effects decrease somewhat in columns (3) and (6) when we add the county and Census

    division variables. These estimates are significantly different from 18.61 (corresponding to

    a discount rate of 0.0733 adjusted by the marginal tax rate) and 26.03 (corresponding to a

    discount rate of 0.0524 adjusted by the marginal tax rate), the range of estimates we would

    expect if districts were spending efficiently.

    In Table 3 we control for school district fixed-effects by estimating (via OLS) the

    change in aggregate residential property value per pupil associated with the change in state

    aid for education per pupil. Again, the results from a simple bivariate regression are

    presented in column (1); the remaining two columns sequentially add district and thencounty characteristics and Census division indicators. The regressors are similar to those in

    Table 2 in that we control for the levels of the variables from 1980 and well as the change

    from 1980 to 1990. Once again, we tend to estimate a negative relationship between

    property values and state aid per pupil, although the estimates tend to be less negative than

    those in Table 2, reflecting the importance of controlling for all time-invariant district

    characteristics.

    Based on the OLS results in Tables 2 and 3, one would conclude both that the increased

    expenditures are not valued in the housing market and that school districts are not

    generating increases in property values consistent with property value maximization since

    a $1 increase in their state education aid does not generate a (properly discounted) $1increase in property values.

    5.2. Instrumental variables (IV) estimation

    5.2.1. Overall

    Our OLS coefficient estimates on state aid per pupil are likely biased for two reasons.

    As discussed above we expect the estimates to be negatively biased because most states

    have moved to more equalizing state financing formulas. Additionally, the estimates may

    14 We also include dummy variables indicating whether there are missing values for the percentage of

    households that moved into their house less than 10 years ago, the FBI crime index, and the percentage of county

    workers who are organized.

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    be attenuated due to measurement error which is exacerbated in first-differenced

    equations. As a result, we instrument for changes in state aid with changes in predicted

    state aid, an instrument that holds the school districts characteristics constant at their

    1980 levels. The first-stage relationship (not shown) is between observed changes in state

    aid per pupil and the instrumental variables, predicted basic state aid and predicted total

    state aid. These estimates suggest that both instruments are significantly correlated with

    observed changes in state aid per pupil; a $1 increase in predicted aid is associated withapproximately a 9 cent increase in actual state aid, controlling for district and county

    characteristics. The IV estimates are presented in Table 4. The estimates in column (1) use

    Table 3

    OLS estimates of the effect of change in state aid on change in aggregate house values per pupil

    (1) (2) (3)

    Change in state aid per pupil 18.823 3.232 6.522(1.330) (0.966) (0.980)

    Change in average household income 7.967 7.239

    (0.350) (0.365)

    Change in average household income 0.021 0.026squared divided by 10,000 (0.023) (0.022)

    Change in % population with at least 5657.455 4868.962

    16 years of education (381.985) (370.410)

    Change in % housing units owner occupied 4126.895 4400.536(233.916) (231.523)

    Change in % children enrolled in private 3113.585 2973.682

    school (275.595) (267.307)

    Change in total housing units (1000s) 0.767 0.872

    (0.062) (0.065)

    Change in enrollment (1000s) 1.181 1.331

    (0.148) (0.149)

    Change in % households in urban areas 1155.674 1100.085

    (99.653) (95.752)

    P-value: state aid= 18.61

    (d 0:0733*1 mtra 0.000 0.000 0.000P-value: state aid= 26.03

    (d 0:0524*1 mtra 0.000 0.000 0.000R2 0.022 0.613 0.647

    Notes: the dependent variable is the change (from 1980 to 1990) in the aggregate residential property valueper pupil. Standard errors are in parentheses. There are 9076 observations. All equations include a constant.

    Column (2) also includes the change in the percent unemployed, change in the percent of housing units that

    are vacant, change in the percent of occupied housing units built more than 10 years ago, change in the

    percent of households that moved into their house less than 10 years ago, change in the percent of the

    population over 55 years of age, and the 1980 levels of all included variables; column (3) includes the

    variables included in the column (2) specification in addition to the variables listed under county

    characteristics in Table 1, 1980 levels of the county characteristics, indicators for the Census division of the

    school district and dummy variables indicating if the change in the crime index or the percent of county

    employees that are unionized are missing. Both columns (2) and (3) include a dummy variable indicating

    whether the 1980 percent of the population that moved in 10 years ago is missing. The equations are

    weighted by student enrollment in 1980. All dollar values are in 1994 dollars.ad is the discount rate; mtr is the marginal tax rate. See text.

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    the change in predicted basic state aid and those in column (2) use the change in predicted

    total state aid. We continue to control for the district and county characteristics as well as

    Census divisions as described above. The magnitudes of the IV estimates are remarkably

    similar across the two calculations of state aid. A $1 increase in state aid increases

    aggregate housing values per pupil between $29 and $30. These results suggest that

    increases in state aid increase property values, which reflects that potential residents valuethe education expenditure.

    We also report the P-values for the test of the null hypothesis that districts are

    spending education money efficiently, i.e., that the coefficient on state aid equals 18.61

    or 26.03. In both cases we can reject that the coefficient equals the smaller of the two

    values while we cannot reject equivalence at the larger value. Thus, we conclude that

    there is no evidence of massive overspending by school districts on net. This

    interpretation, however, depends heavily on the assumed discount rate. Another way

    to evaluate the precision of the finding is to consider the range of discount rates over

    which one would reject the null hypothesis that school districts spend inefficiently by

    overspending. Given the point estimates in Table 4 of about 30, if the true discountrate is lower than 4.55 percent, school districts overspend and if the true discount rate

    is more than 4.55 percent, school districts underspend. Thus, the finding that school

    districts do not overspend would hold for a fairly wide range of discount rates (those

    greater than 4.5 percent).

    An important question is whether increases in state aid truly translate into increases

    in education provision at the district level for our inferences about the efficiency of

    school expenditures only hold ifyE=ySp0 (see Eq. (8)). To provide some evidence onhow the additional state aid is spent, we study the relationship between state aid and

    district total expenditures on education, local school property tax rates, and local

    revenues for education. We estimate instrumental variables models identical to those inTable 4 except for the dependent variable. The results, in Table 5, suggest that changes

    in state aid for education increase education expenditure, decrease school district tax

    Table 4

    IV estimates of the effect of change in state aid per pupil on change in aggregate house values per pupil

    Instrumental variable

    Change in predicted Change in predictedbasic state aid total state aid

    (1) (2)

    Change in actual state aid 29.260 30.285

    per pupil (5.074) (5.001)

    P-value: state aid = 18.61

    (d 0:0733*1 mtra 0.036 0.020P-value: state aid = 26.03

    (d 0:0524*1 mtra 0.525 0.395

    Notes: the dependent variable is the change (from 1980 to 1990) in aggregate residential property values per

    pupil. The endogenous variable is the change in actual state aid per pupil. Standard errors are in parentheses. See

    text or the notes to column (3) ofTable 2. There are 9076 observations.ad is the discount rate; mtr is the marginal tax rate. See text.

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    rates, and have no effect on total local revenue for public schools.15 The results from

    estimating the effect of changes in state aid on total education expenditures are

    presented in column (1).16 A $1 increase in state aid per pupil increases total

    expenditures per pupil by approximately 83 cents. These results suggest that education

    provision responds to changes in state aid, i.e. yE=ySp0, such that our estimate of theeffect of changes in state aid per pupil on changes in aggregate house values per pupil

    leads to inferences about efficiency.

    The results presented in columns (2) and (3) suggest that school districts may use some

    of the increase in state aid per pupil to decrease their own tax burden. In column (2) we

    show that a $1 increase in state aid per pupil is associated with a decrease in school district

    property tax rates by 8 9 cents per $10,000 of aggregate property value. Increasing

    property values over the decade may explain some of the decline in tax rates. Further, the

    results in column (3) suggest that districts may have reduced their tax rates by enough to

    decrease their local contribution to public schools; a $1 increase in state aid per pupil is

    associated with a 56 cent decline in total local revenue per pupil, although the effect is

    not statistically significant.

    5.2.2. Differences by school district characteristics

    The previous section tested for whether state aid translates into property value

    increases, on net. This aggregate estimate, however, may mask important differences

    Table 5

    IV first-differenced estimates of the effect of change in state aid per pupil on school expenditures, property tax

    rates, and property tax revenue

    Dependent variableChange in total Change in school district Change in

    expenditures per pupil property tax rates local revenue

    (1) (2) (3)

    Instrumental variable = change in predicted basic state aid per pupil

    Change in actual state aid 0.831 0.089 0.062per pupil (0.076) (0.008) (0.049)

    Instrumental variable = change in predicted total state aid per pupil

    Change in actual state aid 0.833 0.080 0.048per pupil (0.074) (0.007) (0.048)

    Number of observations 8460 8460 8460Notes: for each equation estimated, the endogenous variable is the change in actual state aid per pupil. Standard

    errors are in parentheses. See text or column (3) ofTable 2 for other covariates. The equations are weighted by

    district student enrollment in 1980. The mean of the dependent variable for column (1) estimates is 1353.92; the

    mean for column (2) is 2.577; the mean for column (3) is 589.44. The school district property tax rate units aredollars raised per 10,000 dollars of property value. Changes in predicted state aid are calculated using the state

    school financing formulas and the 1980 characteristics of school districts.

    15 We have also explored the effect of changes in state aid on education inputs and outcomes, namely, district

    pupilteacher ratios and high school dropout rates. We find small, statistically insignificant effects.16 We define district total expenditure on education as the sum of current expenditure (as defined by Murray

    et al., 1998), intergovernmental expenditure, construction expenditure, expenditure on other capital, and interest

    on debt.

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    across districts. A natural implication of the theoretical framework is that areas with

    better performing markets should be more efficient. For example, because households

    with greater income can afford to consider a wider range of school districts in which to

    reside and can more easily afford private schools, we expect that school spending inwealthier areas should be more efficient. Similarly, school district characteristics may

    affect the efficiency of school spending. In this last section we consider whether the

    relationship between state aid and property values varies by household and district

    characteristics.17

    We begin by asking whether property values in wealthier and more educated public

    school districts are more responsive (positively) to changes in state aid. To do so we

    use 1980 characteristics to divide districts into quintiles based on the average

    household income and the proportion of householders who do not have a high school

    degree. We classify those in the lowest quintile as being low income or having low

    education and those in the highest quintile as being high income or having high

    education.18 The average income of districts classified as low income is $28,973; the

    average for those classified as high income is $55,526. Fifty percent of householders

    in less educated districts have less than a high school education, whereas only 17

    percent of householders in highly educated districts have less than a high school

    education.

    In the upper panel ofTable 6, we estimate the results by income. The results in both

    columns (1) and (2) suggest that low-income districts could increase aggregate property

    values by decreasing spending on public schools since each additional dollar of state aid

    raises property values by less than the properly discounted value of the additionalspending. We also find that the difference in the effect of state aid on property values

    between low- and high-income communities is statistically significant. The estimates

    reported in the middle panel allow for variation by the education level of the community.

    Again we find that districts in less-educated communities more likely to overspend on

    public schooling than those in high-education communities.

    Finally in the bottom panel ofTable 6 we differentiate schools by whether housing

    in the school district is primarily owner or renter occupied. Eighty-four percent of

    housing units in owner-occupied districts are occupied by owners. Renter-occupied

    districts have only 52 percent of housing units owner occupied. Assuming that owner

    occupation of housing provides another proxy for resources, we expect that districtswith a low percentage of owner-occupied housing may be less efficient than those in

    owner-occupied districts. The results suggest that school district efficiency indeed

    varies by the percent of housing in a district that is owner occupied. Compared to

    largely owner-occupied districts, districts with high rental rates appear to overspend on

    public schooling.

    17 In Tables 6 and 7 we restrict the effects of the other covariates to be the same across the districts and only

    interact state education revenues with the demographic or district characteristic in question. We also interact the

    instruments with these categories.18 In Tables 6 and 7 we adopted the rule of defining the categories based on the 20th and 80th percentiles

    (when weighted). The exception is the categorization of districts into competitive or not competitive using the

    HerfindahlHirschman Index. The results are not generally sensitive to small changes in these cut-off choices.

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    Overall, it appears that districts with poorer and less-educated residents overspend onschools relative to wealthier and more highly educated districts. Note that the difference in

    coefficient estimates between the wealthier and poorer districts reflects differences in the

    relative values of the marginal rates of substitution between education and other goods and

    the marginal costs of providing education. One potential factor driving these differences

    may be lack of mobility. The restricted mobility may arise because of a lack of income,

    restricted access to credit markets, or discrimination. Alternatively, if one believes that

    districts with poorer and wealthier (or more- and less-educated) residents have similar

    marginal rates of substitution between education and other goods, then the difference may

    reflect an inherently higher marginal cost of providing education in the poorer districts.

    For example, the presence of peer effects may lower the cost of schooling production inwealthier or highly educated communities relative to less-advantaged communities

    (Benabou, 1993).

    Table 6

    IV first-differenced estimates of the effect of change in state aid per pupil on aggregate house values per pupil by

    selected characteristics of the school district residents

    Type of state aid used as instrumentChange in predicted Change in predicted

    basic state aid per pupil total state aid per pupil

    Average household income

    Low (bottom 20th percentile) 11.018 8.452

    (10.071) (9.963)

    Average (20 to 80th percentile) 9.816 11.465

    (6.053) (5.959)

    High (top 20th percentile) 90.661 91.767

    (12.698) (12.328)

    P-value: low = high 0.000 0.000

    Education

    Low (top 20th percentile in share 4.165 1.782

    of persons without a HS diploma) (8.721) (8.433)

    Average (20 to 80th percentile in share 35.373 37.106

    of persons without a HS diploma) (6.189) (6.100)

    High (bottom 20th percentile in share 36.889 39.928

    of persons without a HS diploma) (13.421) (13.137)

    P-value: low = high 0.040 0.014

    Percent owner occupied

    Renter-occupied districts 3.000 1.556

    (bottom 20th percentile) (7.166) (7.027)Mixed 39.610 40.509

    (20 to 80th percentile) (8.233) (5.809)

    Owner-occupied districts 57.114 58.007

    (top 20th percentile) (10.679) (10.642)

    P-value: high renter = high owner 0.000 0.000

    Notes: see notes to Table 4. The demographic groups are based on their values in 1980 weighted by pupils in

    1980.

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    In Table 7 we conduct a similar exercise for district characteristics. In the top panel

    ofTable 7 we test for differential efficiency by the level of public school competition,

    as measured by the Herfindahl Hirschman Index (HHI).19 Researchers argue that an

    HHI based on the concentration of enrollment in a geographic area reflects the market

    power of public schools in the area and therefore the degree of choice that parents

    may have (Borland and Howsen, 1992; Hoxby, 1996). Thus, we would expect that

    districts with less market power would be more efficient than those in less-competitive

    areas. The HHI ranges from 0 to 1. Districts in areas with only a few large school

    districts will have values close to 1 as the districts monopolize student enrollments;

    Table 7

    IV first-differenced estimates of the effect of change in predicted state aid per pupil on aggregate house values per

    pupil by selected characteristics of the school district

    Type of state aid used as instrumentPredicted basic Predicted total

    state aid per pupil state aid per pupil

    County Herfindahl Index (HHI)

    Low 50.649 50.884

    (HHI < 0.15/competitive) (7.901) (7.715)

    Average 30.194 28.312

    (0.15VHHIV 0.46) (7.718) (7.191)

    High 0.644 3.296(HHI>0.46/not competitive) (10.261) (10.936)

    P-value: low = high 0.000 0.000

    District size in 1980

    Small 51.828 51.142

    (bottom 20th percentile) (11.927) (11.857)

    Average 35.812 36.272

    (20 to 80th percentile) (6.620) (6.452)

    Large 20.703 15.889(top 20th percentile) (10.498) (9.603)

    P-value: small = large 0.000 0.000

    Unionization in 1980

    Unionized 31.149 33.305

    (5.729) (5.735)Non-unionized 40.730 42.375

    (11.140) (11.232)

    P-value: unionized = non-unionized 0.438 0.466

    Notes: see notes to Table 4. The school district characteristic groups are based on their values in 1980 weighted by

    pupils in 1980. Unionized districts have at least 50 percent of instructional employees unionized and at least one

    contractual agreement in effect. Due to missing unionization information at the district level, the unionization

    regression contains only 9015 observations.

    19 The HHI is defined for each market as the sum of the squares of the market shares of all participants. In

    this case, we define market share as the proportion of county public school enrollment in each district and sum the

    squares of these proportions for each county.

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    districts with lower values face more competitive pressure. We base our HHI on the

    concentration of public school enrollments in the county. The Federal Trade Commis-

    sion (FTC) guidelines for horizontal mergers define markets with HHIs below 0.10 as

    unconcentrated, HHIs from 0.10 to 0.18 as moderately concentrated, and HHIs above0.18 as highly concentrated. Using these guidelines, 74 percent of our school districts

    are in highly concentrated markets. However, the FTC guidelines were not written for

    school districts, which must exist in all counties, and will therefore generate markets

    that are more concentrated than the typical product market. As a result, we use a more

    moderate definition of concentration and divide the districts into those that are

    somewhat competitive (HHI < 0.15, approximately 20 percent of our sample), those

    that are monopolistic (HHI>0.46, approximately 34 percent of the sample), and those

    in between.

    The results in the top panel ofTable 7 suggest that property values in areas that face

    little or no competition increase less in response to a change in state aid than districts

    facing a relatively competitive market. Note that the property value response to changes in

    the spending practices of school districts in not-competitive areas is significantly different

    from the response to practices of those that face the most competition. We find some

    evidence that those districts facing the least competition as measured by the HHI are

    overspending.

    Next we examine the effect of school district size. Undoubtedly there is an optimal

    size for school districts as small districts may not be able to reach an efficient scale in

    the production of education and large districts may be beyond the efficient scale. The

    concern in education policy today is that large districts, such as those in New YorkCity and Chicago, are so large that administration and bureaucracy absorb resources

    that efficiency would dictate should be directed towards instruction. Further, in these

    areas residents have fewer choices among public school districts. Thus, in the middle

    panel ofTable 7 we test for differences in efficiency by district size. Using both sets

    of instruments, we find there is a significant difference between small and large

    districts, suggesting that large districts are more likely to overspend than small districts.

    The results are consistent with the idea that smaller districts perform better than large

    districts; however, we cannot specifically identify the mechanism driving the efficiency

    difference.

    Finally, in the bottom panel ofTable 7, we examine the effect of teacherunionization on efficiency. The apriori effect of teachers unions on productivity is

    unclear (Eberts, 1984; Eberts and Stone, 1987; Hoxby, 1996). On the one hand, unions

    may increase schooling efficiency because they have a better understanding of the

    educational production process or by giving their members voice to communicate

    grievances with management (Freeman and Medoff, 1984). On the other hand, the

    unions may predominantly exact rents from the school district and thereby decrease

    efficiency. For this exercise we define those districts where at least 50 percent of the

    teachers are organized and there is at least one collective bargaining agreement in

    effect at the time as unionized. Approximately 45 percent of our sample school

    districts were unionized in 1980. The results are in the bottom panel of the table. Wefind no evidence that unionized districts spend beyond the optimal level, thereby

    spending education dollars inefficiently.

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    6. Conclusion

    In this paper we take a market-based approach to examine whether increased

    school expenditures are valued by potential residents and whether the current level ofpublic school provision is inefficient (as perceived by potential residents). We find that,

    on average, additional school spending is valued by potential residents. In addition, we

    find that, on net, public school districts do not appear to spend increases in state aid

    for education inefficiently. That said, we also find that large school districts, those

    facing less competition, and those in areas with fewer homeowners and in areas in

    which residents are poor or less educated, are more likely to overspend. In contrast, we

    find no evidence that unionized districts spend beyond the optimal level, thereby

    spending education dollars inefficiently. One interpretation of these results is that

    increased competition has the potential to reduce overspending on public schools in

    some areas.

    Some care must be taken in interpreting these findings. First, the judgements about

    school efficiency result from a model with potentially strong assumptions. While we

    do not believe that violations of these assumptions would have a large impact on our

    qualitative findings, they must be kept in mind. Second, based on our methodology, it

    is unclear whether increased efficiency would generate higher or lower levels of

    education spending. For example, while we find evidence that some districts overspend

    on education, our analysis cannot reveal the source of the inefficiency and therefore we

    cannot determine whether increased competition would lead to increases or decreases

    in education spending. Competition may lead districts to decrease the amount ofeducation provided and thus decrease spending. Alternatively, competition may lead

    districts to increase their productivity with little effect on the total spending. Finally,

    we note that the competition we observe that improves efficiency may have the

    consequence of increasing stratification which may decrease social welfare (Fernandez

    and Rogerson, 1996, 1998; Benabou, 1993).

    Acknowledgements

    We thank Roland Benabou, Ben Bernanke, David Card, Anne Case, Jonas Fisher,Jonathan Gruber, Jeff Kling, Alan Krueger, Caroline Hoxby, Abigail Payne, Thomas

    Romer, Lara Shore-Sheppard, and Daniel Sullivan for helpful conversations, and

    seminar participants at the American Education Finance Association meetings, Cornell

    University, the Federal Reserve Bank of Chicago, Hunter College, the John F. Kennedy

    School of Government, the Joint Center for Poverty Research at the University of

    Chicago, the meeting of the MacArthur Research Network on Inequality and Economic

    Performance in Cambridge, MA, 1999, the Childrens Workshop of the National

    Bureau of Economic Research, the National Center for Education Statistics Data

    Conference, Princeton University, the World Congress of the Econometric Society, and

    anonymous referees for insightful comments and suggestions. We also thank OlivierDeschenes, Jonathan Moore, Daniel Fernholz, Melissa Goodwin, Yvonne Peeples, Jeff

    Wilder and particularly Kimberly Sked for outstanding research assistance. Barrow

    L. Barrow, C.E. Rouse / Journal of Public Economics 88 (2004) 17471769 1767

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    thanks the National Science Foundation, and Rouse thanks the Mellon Foundation for

    financial support. The views expressed in this paper are those of the authors and are

    not necessarily those of the Federal Reserve Bank of Chicago or the Federal Reserve

    System. All errors are ours.

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