Job Market Paper


Gambling with Graduation: Mobile Sports Betting Legalization and Student Persistence [draft]

This paper examines whether the legalization of mobile sports betting affects college student persistence. I construct an original dataset identifying the precise date each state first offered legal mobile sports betting, distinct from the date of legislative authorization, and combine it with an annual panel of 1,488 four-year colleges from the Integrated Postsecondary Education Data System (IPEDS), 2014–2024. Using a difference-in-differences design that accounts for staggered treatment timing (Callaway and Sant'Anna, 2021), I find that legalization is associated with a statistically significant 1.21 percentage point decline in four-year graduation rates, with effects increasing in cohorts' cumulative exposure to legal betting access. The effect is absent from both six-year graduation rates and first-year retention, the latter serving as a falsification check since most entering freshmen are below the legal betting age of 21. Checks on applicant, admissions, and enrollment composition show no evidence that the results are driven by selection into treated institutions. The findings suggest mobile sports betting access delays, rather than prevents, college completion.