His research focuses on educational accountability and equity. His publications include "The Impact of Accountability on Racial and Socioeconomic Equity" in American Educational Research Journal, 2004, and "Racial and Ethnic Achievement Gap Trends" in Educational Researcher, 2002. He has served on the State of Maine Technical Advisory Committee of Comprehensive Student Assessment System, the Academic Advisory Board of Harvard University Civil Rights Project on No Child Left Behind Act, the Expert Panel of Smart Library on Closing the Achievement Gap, and the Guest Editor of KEDI Journal of Educational Policy.