A new Reason Foundation study finds that even though preschool enrollment has increased from 16 to 66 percent since 1965 the massive growth in preschool attendance has not resulted in increased student achievement, with U.S. test scores rising only very slightly since 1970 when standardized national testing of fourth, eighth, and twelfth graders began. The full study, by Lisa Snell and Darcy Olsen, is available here (.pdf). Other Reason studies and columns on universal preschool: Policy Brief: The Case Against Universal Preschool (.pdf) Wall Street Journal Op-Ed: Taxing and tactics should be questioned in California universal preschool debate Wall Street Journal Op-Ed: California’s universal preschool plan will hurt businesses, teachers San Francisco Chronicle Op-Ed: Reiner’s plan is failing in Quebec, won’t work in CA