School funding by property tax — the original sin

American public schools developed in the nineteenth century as genuinely local institutions, funded by genuinely local taxes, mostly on land. The common school movement, led by Horace Mann and others, embedded local control as both a practical necessity and an ideological commitment. As long as communities were demographically and economically heterogeneous within themselves, local funding produced rough equality across communities. The post-war suburbanization of the United States, the federal subsidization of white suburban homeownership through FHA and VA mortgages, the concomitant redlining of urban Black neighborhoods, and the resulting concentration of wealth in newly built suburban rings, broke the assumption of within-community heterogeneity. After 1950, "local" meant something different from what it had meant in 1850. The funding mechanism did not change. The geography did.

In 1971, the California Supreme Court in Serrano v. Priest held that the property-tax funding mechanism violated the state constitution by making the quality of a child's education depend on the wealth of their neighbors. The decision triggered a wave of state-level litigation across the country. The U.S. Supreme Court in San Antonio v. Rodriguez (1973) declined to find a federal constitutional violation, leaving the issue to state courts under state constitutions. State courts have since produced a fragmented landscape: some states (Kentucky, New Jersey, Massachusetts) ordered substantial equalization; others (most) accepted weak Foundation Aid formulas that narrow but do not close the gap. The half-century of litigation has shifted the architecture at the margins. It has not displaced the property-tax mechanism.

A long-running debate in education policy has asked whether increased school spending actually improves outcomes. The answer, after a generation of better empirical work, is yes, with caveats. C. Kirabo Jackson, Rucker Johnson, and Claudia Persico's work on school finance reforms shows that court-ordered spending increases produced significant gains in educational attainment and adult earnings, particularly for low-income children. The effect sizes are substantial — a 10 percent increase in per-pupil spending sustained over twelve years produced roughly a 7 percent increase in adult wages for children from low-income families. The older Hanushek argument that money doesn't matter has been substantially overturned by better identification strategies. Money matters. How it is spent matters too, but money matters.

Bruce Baker at Rutgers and the Albert Shanker Institute have produced annual analyses of state school funding systems that quantify, by state, how progressive or regressive school funding actually is. Most states, in any given year, are either flat (high- and low-poverty districts get roughly equal per-pupil funding) or regressive (high-poverty districts get less). Only a handful — New Jersey, Minnesota, Massachusetts, Ohio in some years — produce funding patterns that meaningfully exceed in high-poverty districts what the underlying need would require. The pattern is durable across decades and resistant to political change. The federal Title I program, designed to compensate for state-level inequities, supplies roughly 8 percent of K-12 funding nationally — too thin to overcome state-level patterns.

District spending differences translate, in large part, into teacher labor market differences. Wealthy districts pay more, offer better working conditions, smaller classes, and more autonomy. Poor districts pay less and offer harder working conditions. The result is a sorting of teaching talent that maps onto district wealth. The most experienced teachers cluster in wealthy districts. Novice teachers, by labor market necessity, fill the gaps in poor districts. The teacher quality gap is one of the largest and most consequential consequences of the funding gap, because teacher quality is one of the most consistent in-school predictors of student achievement. Equalizing funding without equalizing teacher labor markets accomplishes less than expected. Equalizing teacher labor markets without equalizing funding is impossible.

The legal and policy literature distinguishes two arguments against the property-tax mechanism. The equity argument is that children should not receive substantially different resources based on accident of geography. The adequacy argument is that some baseline level of resources is required to deliver a constitutionally guaranteed education, and that many districts fall below this level regardless of how they compare to their neighbors. State courts have varied in which argument they accept. Adequacy has been more politically viable than equity in many states, because it allows wealthy districts to maintain their advantage as long as poor districts reach a minimum. The adequacy framing has accomplished real things — Kentucky's KERA reform, New Jersey's Abbott decisions — but has also tacitly accepted that geographic inequality is allowable above the floor.

Most peer democracies fund schools nationally or at a regional level that is broader than US-style local districts. Finland, France, Germany, Japan, South Korea, the Netherlands — all distribute education funding in ways that produce far smaller cross-district variance than the US. The administrative structures differ; the principle that a child's education should not depend on local property wealth is more or less universal. The exception is the United States and a handful of other systems with similar federal structures, and even within Canada the provinces have largely centralized school funding to eliminate within-province inequity. The American outlier status is not subtle. It is the product of a specific historical accident — the nineteenth-century structure left intact through the twentieth-century demographic transformation — and is internationally unusual.

Henry Levin's work on the economic returns to equalizing educational opportunity has consistently shown that the costs of educational inequality, when translated into lost lifetime earnings, increased criminal justice expenditures, and increased health care costs, vastly exceed the costs of the equalization itself. The argument is not new. It has been made by economists since at least the 1960s. The persistent resistance to it reveals that the property-tax mechanism is defended not on economic grounds but on political ones: the families currently advantaged by the mechanism vote, organize, and have the legal and political resources to defend their advantage. The losers of the mechanism — children — do not.

The property-tax funding mechanism creates a closed loop with housing markets. School quality, capitalized into housing prices, raises property tax bases in wealthy districts, which funds further school quality, which raises housing prices further. The same loop runs in reverse in poor districts. Empirical work by Sandra Black and others has documented the magnitude of the school-quality premium in housing prices — often 5-15 percent of home value within a school district boundary. The premium is, in effect, a private subsidy paid by families who can afford it for access to public schools that are nominally available to everyone. The funding mechanism converts educational opportunity into a private good wrapped in a public institution.

Jonathan Kozol's documentation, three decades on, has dated only in its specifics. The named schools have changed names, some buildings have been replaced, demographics have shifted. The structure has not. East St. Louis is still poor. New Trier is still wealthy. The factor-of-two-or-three spending differential is still there. Kozol's argument was not that the system needs better managers or smarter teachers in the bad districts. It was that the funding mechanism, by design, produces what it produces, and that pretending otherwise is dishonest. The argument has not been refuted. It has been ignored.

Sean Reardon and Ann Owens's work documents that residential segregation by income has increased in recent decades, and that school segregation has tracked it closely. The property-tax mechanism functions efficiently only where district boundaries enclose homogeneous populations. As income segregation has risen, the mechanism has translated economic segregation into educational segregation with increasing efficiency. The gap between high-income and low-income districts has, in many states, widened in the past twenty years. The system is not stuck. It is sliding in the wrong direction.

Serious revision of the property-tax funding mechanism would require state-level decisions to fund schools through state-level revenue, with allocation based on student need rather than district property wealth. Several states have moved partly in this direction; none has gone fully. Federal action — equalizing across states — would require a constitutional reframing that has not been politically available since Rodriguez in 1973. Short of structural reform, the available levers are: progressive state funding formulas that meaningfully overweight high-need districts; consolidation of small districts that fragment tax bases; regional revenue-sharing arrangements; portable funding that follows students across district lines; and federal Title I funding at a level that actually compensates rather than gestures. None of these is impossible. All have been done somewhere. None has been done at the scale the problem requires.

To call the property-tax funding mechanism an original sin is to say that it was a foundational error, not a peripheral one, and that the rest of the architecture has been built around it. Remediation through state aid formulas, federal supplements, court orders, and curriculum reforms has not solved the problem because the problem is structural. Either the funding mechanism changes or the consequences continue. Sixty years of evidence say that the choice we have actually made — to keep the mechanism and apologize for it — is the most expensive choice available, paid for in foregone human development, in adult earnings that will never accrue, in incarceration costs that will be paid downstream, and in the slow corrosion of the moral claim of equal protection. Revision is not a luxury. It is overdue, by about a century.

1. Kozol, Jonathan. Savage Inequalities: Children in America's Schools. New York: Crown, 1991.

2. Kozol, Jonathan. The Shame of the Nation: The Restoration of Apartheid Schooling in America. New York: Crown, 2005.

3. Baker, Bruce D., Mark Weber, Ajay Srikanth, Robert Kim, and Michael Atzbi. Is School Funding Fair? A National Report Card. Newark, NJ: Education Law Center, 2018.

4. Jackson, C. Kirabo, Rucker C. Johnson, and Claudia Persico. "The Effects of School Spending on Educational and Economic Outcomes: Evidence from School Finance Reforms." Quarterly Journal of Economics 131, no. 1 (2016): 157-218.

5. Reardon, Sean F., and Kendra Bischoff. "Income Inequality and Income Segregation." American Journal of Sociology 116, no. 4 (2011): 1092-1153.

6. Owens, Ann. "Inequality in Children's Contexts: Income Segregation of Households with and without Children." American Sociological Review 81, no. 3 (2016): 549-574.

7. Black, Sandra E. "Do Better Schools Matter? Parental Valuation of Elementary Education." Quarterly Journal of Economics 114, no. 2 (1999): 577-599.

8. Levin, Henry M., Clive Belfield, Peter Muennig, and Cecilia Rouse. The Costs and Benefits of an Excellent Education for All of America's Children. New York: Teachers College, Columbia University, 2007.

9. Hanushek, Eric A., and Alfred A. Lindseth. Schoolhouses, Courthouses, and Statehouses: Solving the Funding-Achievement Puzzle in America's Public Schools. Princeton: Princeton University Press, 2009.

10. Rothstein, Richard. The Color of Law: A Forgotten History of How Our Government Segregated America. New York: Liveright, 2017.

11. Lafortune, Julien, Jesse Rothstein, and Diane Whitmore Schanzenbach. "School Finance Reform and the Distribution of Student Achievement." American Economic Journal: Applied Economics 10, no. 2 (2018): 1-26.

12. Reardon, Sean F. "School District Socioeconomic Status, Race, and Academic Achievement." Educational Researcher 48, no. 2 (2019): 86-99.