Promoters of school vouchers argue tiresomely that voucher-school students do better academically than public-school students. It's untrue, as every study shows. Wisconsin has the oldest private-school voucher program in the U.S. The most recent study shows that students participating in the Milwaukee Parental Choice Program scored proficient or advanced on standardized tests at a rate of 34.4 percent in math and 55.2 percent in reading. Students in Milwaukee public schools scored proficient or advanced at a rate of 48.7 percent in math and 59 percent in reading on the same tests.