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Class-Size Caps, Sorting, and the Regression-Discontinuity Design

Urquiola, Miguel S.; Verhoogen, Eric A.

This paper examines how schools’ choices of class size and households’ choices of schools affect regression-discontinuity-based estimates of the effect of class size on student outcomes. We build a model in which schools are subject to a class-size cap and an integer constraint on the number of classrooms, and higher-income households sort into higher-quality schools. The key prediction, borne out in data from Chile’s liberalized education market, is that schools at the class-size cap adjust prices (or enrollments) to avoid adding an additional classroom, which generates discontinuities in the relationship between enrollment and household characteristics, violating the assumptions underlying regression-discontinuity research designs.

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Title
American Economic Review
DOI
https://doi.org/10.1257/aer.99.1.179

More About This Work

Academic Units
International and Public Affairs
Publisher
American Economic Association
Published Here
April 11, 2014