-performing third grade students in Colombia, to study whether providing educational support to low-achieving students affects the …-form effect on higher-achieving students as a spillover effect within treated schools. We then estimate a linear-in-means model of … explore several mechanisms, including teachers’ effort, students’ misbehavior, and peer-to-peer interactions. Our findings show …

-performing third grade students in Colombia, to study whether providing educational support to low-achieving students affects the …-form effect on higher-achieving students as a spillover effect within treated schools. We then estimate a linear-in-means model of …. We explore several mechanisms, including teachers' effort, students' misbehavior, and peer-to-peer interactions. Our …

socio-economic and academic skill composition of schools. We exploit the quasi-random reassignment of students across …, increasing the achievement levels of students' peers improves students' math and ELA test scores but harms their ELA course … grades. Test score benefits accrue primarily to students from higher-income families, though students with lower family …