Douglas N. Harris is associate professor of economics and University Endowed Chair in Public Education at Tulane University. His more than two dozen articles about teachers and accountability have been published in economics and education journals and cited in the national media, including CNN, Education Week, the New York Times, the Washington Post, and the Wall Street Journal. He co-chaired the 2008 National Conferences on Value-Added in Madison, Wisconsin, and Washington, DC. He is a regular adviser to members of Congress, governors, school districts, and other education policymakers on val...