Howell, William G.; Wolf, Patrick J.; Campbell, David E.; … - In: Journal of Policy Analysis and Management 21 (2002) 2, pp. 191-217
This article examines the effects of school vouchers on student test scores in New York, New York, Dayton, Ohio, and Washington, DC. The evaluations in all three cities are designed as randomized field trials. The findings, therefore, are not confounded by the self-selection problems that...