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 …

. Recent evidence from North Carolina suggests that increases in Limited English students' concentration have led to a slight … decline in performance solely for students at the top of the achievement distribution. The heterogeneous peer effects by …. Utilizing fixed effects methods that allow us to address possible endogeneity with respect to the schools' students attend, we …