We review the theoretical, computational, and empirical research on school vouchers, with a focus on the latter. In this substantial body of work, many studies find insignificant effects of vouchers on educational outcomes; however, multiple positive findings support continued exploration....

To study the effects of ability grouping on school competition, we develop a theoretical and computational model of tracking in public and private schools. We examine tracking's consequences for the allocation of students of differing abilities and income within and between public and private...