Eric A. Hanushek is the Paul and Jean Hanna Senior Fellow at Stanford University’s Hoover Institution. He has authored or edited 23 books and more than 200 articles, including highly cited education-related studies on the effects of class-size reduction, high-stakes accountability, and teacher-quality assessment. Hanushek introduced the idea of measuring teacher quality through the growth in student achievement; his recent work has focused on the close link between education quality and national economic growth. A former deputy director of the Congressional Budget Office and chairman of the University of Rochester’s department of economics, Hanushek holds a B.S. from the U.S. Air Force Academy and a Ph.D. in economics from the Massachusetts Institute of Technology.