Who benefits from privileged peers? Evidence from siblings in schools
通过比较同一学校不同时间就读的兄弟姐妹，研究发现同伴质量对长期收入的影响因家庭背景而异：弱势学生受益于更好同伴，而特权学生则受损。
Summary By comparing siblings attending the same school at different points in time, we investigate whether the effect of peer quality on long‐term labor market outcomes varies with parental background. We find that exposure to better peers—who have higher mean parental education—increases lifetime earnings of disadvantaged students, coming from families with low parental education, but penalizes privileged students from better educated families. These results suggest that desegregation policies that allocate disadvantaged students to schools with better peers produce long‐term benefits. We discuss mechanisms and show that human capital accumulation, ordinal rank and network effects contribute to explain our findings.