Many economists and policy makers believe that education creates positive externalities. Indeed, average schooling in U.S. states is highly correlated with state wage levels, even after controlling fo
Carlsson, Magnus, Dahl, Gordon B., Ockert, Bjorn, and Rooth, Dan-Olof, (2015) \"The Effect of Schooling on Cognitive Skills.\" Review of Economics and Statistics 97:3, 533-547.
