mathematics and reading test scores, more so for non-LEP students than for LEP students. The overall language mix of LEP students … has little if any discernable relationship with achievement. For LEP students, having more LEP peers speak their mother …

high school classmates (peers), after controlling for school and teachers fixed effects. We find that male students …

This study examines how exposure to immigrant students affects the academic achievement of native students in the three … immigrant peers. I find that exposure to immigrant children has dissimilar effects on native students' achievements across the … organise their educational systems, have a crucial bearing on how immigrant students affect their peers. …

students in economics. We manipulated the composition of groups to achieve a wide range of support, and assigned students … students of low and medium ability gain on average 0.2 SD units of achievement from switching from ability mixing to three …-way tracking. Their dropout rate is reduced by 15 percentage points (relative to a mean of 0.6). High-ability students are …