ability distribution drive the impact of peer quality on students‟ achievements. To do so, we use census data for four cohorts … of pupils taking their age-14 national tests, and measure students‟ ability by their prior achievements at age-11. We …

scores for eight birth cohorts of Rhode Island children born between 1997 and 2005. Using these data, we show that reductions … of lead from even historically low levels have significant positive effects on children's reading test scores in third ….1 percentage points (on a baseline of 12 percent). Moreover, as we show, poor and minority children are more likely to be exposed …

students, and children from higher socio-economic backgrounds. The results suggest that random disturbances during high … Israeli high school students who took a series of high stakes matriculation exams between 2000 and 2002. As a source of random …

rule that uses data on students' birthdays to compute statutory enrollment in the absence of enrollment manipulation also …