TY - JOUR AU - Carneiro,Pedro AU - Heckman,James J. AU - Vytlacil,Edward J. TI - Estimating Marginal Returns to Education JF - National Bureau of Economic Research Working Paper Series VL - No. 16474 PY - 2010 Y2 - October 2010 UR - http://www.nber.org/papers/w16474 L1 - http://www.nber.org/papers/w16474.pdf N1 - Author contact info: Pedro Carneiro Department of Economics University College Gower Street London WC1E 6BT United Kingdom E-Mail: p.carneiro@ucl.ac.uk James J. Heckman Department of Economics The University of Chicago 1126 E. 59th Street Chicago, IL 60637 Tel: 773/702-0634 Fax: 773/702-8490 E-Mail: jjh@uchicago.edu Edward J. Vytlacil Department of Economics New York University 19 West 4th Street, Sixth Floor New York, NY 10012 Tel: 212/992-8682 Fax: 212/995-4186 E-Mail: vytlacil@nyu.edu AB - This paper estimates the marginal returns to college for individuals induced to enroll in college by different marginal policy changes. The recent instrumental variables literature seeks to estimate this parameter, but in general it does so only under strong assumptions that are tested and found wanting. We show how to utilize economic theory and local instrumental variables estimators to estimate the effect of marginal policy changes. Our empirical analysis shows that returns are higher for individuals with values of unobservables that make them more likely to attend college. We contrast the returns to well-defined marginal policy changes with IV estimates of the return to schooling. Some marginal policy changes inducing students into college produce very low returns. ER -