performance and their labor market income. We exploit the within-school, cohort-by-cohort variation in the gender composition of … high school classmates (peers), after controlling for school and teachers fixed effects. We find that male students … performance and change in major. And in the long run it did not produce any difference in income or labor market outcomes. We do …

investigate the mechanisms behind this relationship using data on German pre-teen students. We show that (i) taller children are … better recommendations to taller students. This holds even when controlling for academic achievement and parental background … respect to education policy, our findings suggest that early school tracking might increase disadvantages for students with …