-achieving students and no significant effects among low achievers. Students in top tracking enjoyed multiple advantages, particularly a … concentration of high-performing peers and a very homogeneous classroom, that facilitated the teacher's work and increased students …' effort l evels. Bimodal classes fostered greater effort levels among top students, while teachers induced less competition …

a novel large scale field experiment at university, where students are randomized into work groups based on their score …. Further analysis suggests that students exposed to creative peers become more creative, but do not adjust their overall study … effort. This is in line with the idea that creative approaches and questions of peers help students to master the study …

a higher share of female classmates on students' disruptive behavior, engagement, test scores, and major choices in … disadvantaged and non-disadvantaged schools. We exploit the random assignment of students to classrooms in early high school in … students that contains a large and diverse set of school qualities, and household incomes, and b) we measure disruption and …

a higher share of female classmates on students' disruptive behavior, engagement, test scores, and major choices in … disadvantaged and non-disadvantaged schools. We exploit the random assignment of students to classrooms in early high school in … students that contains a large and diverse set of school qualities, and household incomes, and b) we measure disruption and …

of a two-day freshman orientation program for university students, I find that higher ability peers generate positive … students by 0.05 to 0.08 SD. I provide evidence that the effects result from the formation of lasting social ties, and that …