Research " Migration and Economic Development: The Case of the Mouride Brotherhood From Senegal to the Washington D.C. Metropolitan Area, 1990-2000 "

Migration and Economic Development: The Case of the Mouride Brotherhood From Senegal to the Washington D.C. Metropolitan Area, 1990-2000 Effectiveness sorting should be observable as a magnification of the causal peer effect, as it creates a positive correlation between the peer group and an omitted variable— school effectiveness—in regression models for student outcomes.9 This provides my identification: I look for evidence that the apparent peer effect, the reduced-form gradient of school average test scores with respect to student characteristics, is larger in high-choice than in low-choice markets....