Stuart Kerachsky became Acting Commissioner of the National Center for Education Statistics (NCES) on October 16, 2008. Stuart previously served as associate commissioner for knowledge utilization in the National Center for Education Evaluation and Regional Assistance within IES. Prior to joining IES, he was a senior vice president at Mathematica Policy Research, Inc. His responsibilities over his long career at Mathematica included being director of research and director of surveys. He has been involved in research in education, employment, disability, child development, and health. Stuart received his Ph.D. in economics in 1975 from the University of Wisconsin.