Enhancing economic freedom via school choice and competition: Have state laws been enabling enough to generate broad-based effects?

An aspect of economic freedom that varies across U.S. states is K-12 educational freedom. Some states allow a degree of choice for families in selecting schools outside public schools for their children. However, the enabling laws for such programs are often quite restrictive and limited to few children. Can this limited degree of competition and choice have a noticeable effect on an entire state's overall K-12 performance? I find strikingly large test score gains for states that have adopted voucher programs and/or Education Savings Accounts (ESAs), swamping the effect of per pupil K-12 spending on test scores. Moreover, vouchers and ESAs are associated with less per pupil spending. These effects are robust to a host of specification checks. A key factor is the amount of a program's funding that “follows the student,” even if a small number of students are eligible. Overall, it seems that even a small measure of educational freedom has a large effect.