Other Educational Administration and Supervision Commons^™

Evaluating School Vouchers: Evidence From A Within-Study Comparison, Kaitlin P. Anderson, Patrick J. Wolf

Education Reform Faculty and Graduate Students Publications

Randomized Controlled Trials (RCTs) are the “gold-standard” for estimating causal impacts of educational programs. Students subject to lotteries, however, often are not representative of the broader population of students experiencing the educational treatment. With few exceptions, researchers are not able to determine how much selection bias exists when various quasi-experimental approaches are used in place of experimental ones within a school choice context. We are left wondering about the magnitude of the internal-for-external validity tradeoff that education researchers often face. This study assesses the extent to which methods such as propensity score matching or observational models with control variables can …