previously-estimated average effects to predict benefits. Moreover, it suggests that interventions that target all students would …

An extensive literature in the social sciences analyzes peer effects among students, but estimation is complicated by … observations within peer groups noted by Angrist (2014). The field experiment randomly assigns students to one-to-one partnerships … effects but we find some evidence that low-ability peers negatively affect low-ability and medium-ability students. The …

estimate the average effect of formal schooling on students' academic achievement. However, the extant literature's focus on … number of school days between kindergarten students' fall and spring tests in the nationally representative Early Childhood … Longitudinal Study – Kindergarten Cohort (ECLS-K). The marginal effect of a typical 250-day school-year on kindergarten students …