School Choice Deniers Critics hype a pair of studies while ignoring other evidence on education vouchers.
President Trump has made a cause of public and private school choice, and liberals who oppose evaluating teachers based on student achievement are now hyping a few studies that have found vouchers hurt student performance. A closer look still supports the case for giving parents choice.
More than 400,000 students in 30 states and Washington, D.C., participate in private-school choice programs whose designs and funding sources vary. Over the last two decades dozens of studies have sought to measure these programs’ impact on student growth. Those with the most rigorous methodologies have produced positive findings.
A meta-analysis last year by the Friedman Foundation found that 14 of 18 empirical studies analyzing programs in which students were chosen at random by lottery found positive academic outcomes. Two demonstrated no visible effect, while two recent studies of Louisiana’s voucher program found negative effects. The Louisiana studies are disconcerting since voucher proponents have hailed the program, and the negative effects were large. Math scores declined in one study by 0.4 standard deviations after one year in private schools, representing a 50% increase in likelihood of failing the state test.
