Professional internships during college are a popular and often highly promoted activity among students. A major issue with estimating the impacts of these programs is that students often take time away from their classes to participate, and gaps in college tenure are thought or have been shown...

Slightly missing a school starting age cutoff date, and more generally a student's relative age in their cohort, has been shown in recent research to have important effects. A student's relative age appears to influence their academic success in elementary and middle school, and there is mixed...