London School of Economics Centre for the Economics of Education LSE
Centre for the Economics of Education  (CEE)

Abstract for:

'High' Achievers? Cannabis Access and Academic Performance

Olivier  Marie,  Ulf  Zölitz,  March 2015
Paper No' CEPDP1340: | Full paper (pdf)
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Keywords: Cannabis, legalization, student performance

JEL Classification: I18; I20; K42

Is hard copy/paper copy available? YES - Paper Copy Still In Print.
This Paper is published under the following series: CEP Discussion Papers
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Abstract:

This paper investigates how legal cannabis access affects student performance. Identification comes from an exceptional policy introduced in the city of Maastricht which discriminated legal access based on individuals’ nationality. We apply a difference-in-difference approach using administrative panel data on over 54,000 course grades of local students enrolled at Maastricht University before and during the partial cannabis prohibition. We find that the academic performance of students who are no longer legally permitted to buy cannabis increases substantially. Grade improvements are driven by younger students, and the effects are stronger for women and low performers. In line with how THC consumption affects cognitive functioning, we find that performance gains are larger for courses that require more numerical/mathematical skills. We investigate the underlying channels using students’ course evaluations and present suggestive evidence that performance gains are driven by improved understanding of material rather than changes in students’ study effort.