‘High’-School: The Relationship between Early Marijuana Use and Educational Outcomes

Deborah A. Cobb-Clark, Sonja C. Kassenboehmer, Trinh Le, Duncan McVicar, Rong Zhang

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


We use unique survey data linked to nearly a decade of administrative income support data to examine the relationship between early marijuana use (at age 14 or younger) and young people's educational outcomes. We find evidence that early marijuana use is related to educational penalties that are compounded by high-intensity use and are larger for young people living in families with a history of income support receipt. The relationships between marijuana use and both high school completion and achieving a university entrance score appear to stem from selectivity into the use of marijuana. In contrast, early marijuana use is associated with significantly lower university entrance scores for those who obtain one, and we provide evidence that this effect is unlikely to be driven by selection. Collectively, these findings point to a more nuanced view of the relationship between adolescent marijuana use and educational outcomes than is suggested by the existing literature.
Original languageEnglish
Pages (from-to)247-266
Number of pages20
JournalEconomic Record
Issue number293
Early online date26 Jan 2015
Publication statusPublished - Jun 2015


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