We are having the wrong conversations about improving public education in America. Some say teachers unions are the main problem, and if we just get rid of them and create more choice and competition, the market will take care of itself. Another view is that corporate reformers are trying to privatize education and profiteer from America's second largest industry. If we would just feed the system with more taxpayer money, and add universal preschool, the system would perform just fine. Neither approach is likely to meet with broad, sustained success. If America is going to fulfill its...