Does class size influence student achievement?

Adrien Bouguen, Julien Grenet and Marc Gurgand

Institut des Politiques Publiques from HAL

Abstract: This policy brief presents the results of the most methodologically robust studies that estimate the impact of a reduction in class size on the student achievement and longer-run outcomes. Contrary to an idea that persisted for a long time, the effects are high, if they are compared with those of other educational policies conducted on a large scale and assessed rigorously. The absolute cost of such a policy justifies targeting it on the most disadvantaged pupils, but the investment is profitable whenever the salary gain for two years spent in a half-size class is greater than 1%. However many unknown quantities remain, in particular about how reduction in class size links up with teaching practices.

Date: 2017-09
Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-02522747v1
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Published in 2017, pp.1-7

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Working Paper: Does class size influence student achievement? (2017)
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