Proponents of school choice offer many arguments for charter authorizations, vouchers and education tax credits. For parents, the reasons are often straightforward. Some cite better discipline, dress codes and an emphasis on teaching their traditional or religious values. Others mention plentiful school supplies, increased personal attention or a shorter commute to school.
Policy analysts may point to better test scores, as well as higher graduation and retention rates, than at the underperforming public schools students would…