We develop and estimate an equilibrium model of study time choices of students on a social network. We examine how … characteristics appears important in explaining variation across students in study time and achievement, and determines the aggregate …

), within school-cohort and teacher-group, was not chosen by the students and it was as good as random. We find that male … students graduating from classes with at least 80% of male peers were more likely to choose "prevalently male" (PM) college …