Incentives are widely used to increase people’s effort and thus performance. Whileacademic achievement depends heavily on effort, there is little empirical evidence onhow students respond to incentives other than grades and monetary rewards. We drawon two natural experiments that occurred at a...

To obtain reliable estimates of the effects of single-sex education, I exploit the random assignment of students to single-sex and coeducational schools in South Korea. The results suggest that single-sex schooling is beneficial for girls in math, but has no effects for boys. Moreover,...