Wsj Opinion: Potomac Watch

Nearly half of 12th-graders in the U.S. test "below basic" in math, and Harvard professor of economics Roland Fryer says it's no mystery how to reverse the trend. What's missing is leadership. He explains his research on "five tenets" of successful schools, how they worked in Houston, his view of "equitable" grading, and why economic thinking sheds light on all sorts of questions. Learn more about your ad choices. Visit megaphone.fm/adchoices