What is the Tradeoff between Smaller Classes and Teacher Quality?

46 Pages Posted: 20 Sep 2002 Last revised: 26 Feb 2021

See all articles by Christopher Jepsen

Christopher Jepsen

University College Dublin (UCD) - School of Economics

Steven G. Rivkin

Amherst College - Department of Economics; National Bureau of Economic Research (NBER)

Date Written: September 2002

Abstract

This paper investigates the effects of California's class size reduction program on teacher quality and student achievement in an effort to gain a comprehensive understanding of the impact of a large-scale decrease in class size. It uses year-to-year differences in class size generated by natural variation in enrollment and the state's class size reduction program to identify both the direct effects of class size reduction and accompanying changes in teacher quality. The results show that, all else equal, smaller classes raise third-grade mathematics and reading achievement, particularly for lower-income students. However, the expansion of the teaching force required to staff the additional classrooms appears to have led to a deterioration in average teacher quality in schools serving a predominantly black student body. This deterioration partially or, in some cases, fully offset the benefits of smaller classes, demonstrating the importance of considering all implications of any policy change.

Suggested Citation

Jepsen, Christopher and Rivkin, Steven G., What is the Tradeoff between Smaller Classes and Teacher Quality? (September 2002). NBER Working Paper No. w9205, Available at SSRN: https://ssrn.com/abstract=332249

Christopher Jepsen

University College Dublin (UCD) - School of Economics ( email )

Belfield
Belfield, Dublin 4 4
Ireland

Steven G. Rivkin (Contact Author)

Amherst College - Department of Economics ( email )

P.O. Box 5000
Amherst, MA 01002-5000
United States

National Bureau of Economic Research (NBER) ( email )

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

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