Does School Integration Generate Peer Effects? Evidence from Boston's Metco Program
研究波士顿Metco融合项目（将黑人学生送入富裕郊区学校）对接收学区学生成绩的影响，发现对白人学生无显著影响，对少数族裔三年级学生（尤其女生）有短期微弱影响。
The Metropolitan Council for Educational Opportunity (Metco) is a desegregation program that sends students from Boston schools to more affluent suburbs. Metco increases the number of blacks and reduces test scores in receiving districts. School-level data for Massachusetts and micro data from a large district show no impact of Metco on the scores of white non-Metco students. But the micro estimates show some evidence of an effect on minority third graders, especially girls. Instrumental variables estimates for third graders are imprecise but generally in line with ordinary least squares estimates. Given the localized nature of these results, we conclude that peer effects from Metco are modest and short lived.