In this study, dormitory room and social group assignment data from a college are used to investigate peer effects on college students' decisions to switch majors. Results reveal strong evidence of such peer effects at both the room and the social group level. Most notably, at the room level, the dense concentration of same-major roommates deters…

Florida's Senate Bill 1720 allowed many students to bypass developmental education and enroll directly in introductory college-level courses. We use an interrupted time series design to introductory college-level courses enrollment and passing rates in English and math for three cohorts of college students prereform and three cohorts postreform.…