The Center for American Progress published a useful review of voucher research, which concludes that going to a voucher school is equivalent to losing 1/3 of a year of schooling. Over the past year or so, I have posted the individual studies of vouchers as they appeared, and it is helpful to have them summarized in one place.

The authors of this research review—Ulrich Boser, Meg Bender, and Erin Roth—are senior analysts at CAP. They have done a good job in pulling together the many studies and analyzing the negative effects of vouchers on children. Researchers do not agree on the wisdom of converting test score gains or losses into “days of learning,” a strategy invented by researchers at CREDO, but the authors here use the device against the choice advocates who use it to bash public schools.

CAP is a puzzle to me. Throughout the Obama years, it was a safe haven and cheerleading squad for everything associated with the Obama administration, including the failed, odious, and ineffective Race to the Top.

As this carefully researched paper makes clear, CAP opposes vouchers. But where is CAP on charters? Is it still defending the Obama-Duncan line that school choice is good and traditional public schools are not? Is it willing to do the same research-based review of charters that it did of vouchers?

Does CAP still believe in school choice? Does it support half of the Trump-DeVos agenda? Or will it help return the Democratic Party to its roots by acknowledging the importance of strong public schools, democratically governed, subject to state and federal laws, doors open to all?