We evaluate the impacts of small high schools on youth risky behaviors and mental health in New York City, using a two-sample-instrumental-variable approach to address endogenous school enrollment. We find heterogeneous effects. School size, overall, has little effect. Among "students" most likely to attend small schools opened…

Using public information from birth certificates and prison records from Florida, we adopt a reduced-form approach to estimate the effect of relative age on the probability of incarceration in adulthood (until age 30-40). We use a Regression Discontinuity Design around the cutoff date for Kindergarten enrollment (Sept. 1). We find strong evidence…

This paper provides the first empirical evidence on the existence of negative spillover effects from children exposed to corporal punishment in the home (CPH). We find that interactions with peers suffering from CPH depress achievement in both math and language among Vietnamese fifth graders. Specifically, a one standard deviation increase in the…