Eric Hanushek is the Paul and Jean Hanna Senior Fellow at the Hoover Institution of Stanford University. He is a recognized leader in the economic analysis of education issues, and his research has had broad influence on education policy in both developed and developing countries. He is the author of numerous widely-cited studies on the effects of class size reduction, school accountability, teacher effectiveness, and other topics. He was the first to research teacher effectiveness by measuring students’ learning gains. This approach formed the conceptual basis for using value-added measures to evaluate teachers and schools, now a widely adopted practice in many countries. His recent book, The Knowledge Capital of Nations: Education and the Economics of Growth summarizes his research establishing the close links between countries’ long-term rates of economic growth and the skill levels of their populations. On-going research focuses on international variations in student performance and considers what differences in schooling systems lead to country-differences in the skills of people. He has authored or edited twenty-four books along with over 250 articles. He is a Distinguished Graduate of the United States Air Force Academy and completed his Ph.D. in economics at the Massachusetts Institute of Technology.