In a classic paper, Schelling (1971) showed that extreme segregation can arise from social interactions in white preferences: once the minority share in a neighborhood exceeds a critical "tipping point," all the whites leave. We use regression discontinuity methods and Census tract data from...

Between 1996 and 1998 California and Texas eliminated the use of affirmative action in college and university admissions. At the states' elite public universities admission rates of black and Hispanic students fell by 30-50 percent and minority representation in the entering freshman classes...

Low income and minority students are under-represented in gifted education programs. One explanation for this pattern is that the usual process for identifying gifted students, through parent and teacher referrals, systematically misses many potentially qualified disadvantaged students. We use...