Eric Hanushek is the Paul and Jean Hanna Senior Fellow at the Hoover Institution, 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 student learning gains, which formed the conceptual basis for using value-added measures to evaluate teachers and schools, now a widely adopted practice. His 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. His current research analyzes why some countries’ school systems consistently perform better than others. He has authored or edited 24 books along with more than 250 articles. He is a Distinguished Graduate of the United States Air Force Academy and completed his PhD in economics at the Massachusetts Institute of Technology.