Trained as a statistician/psychometrician, Andrew C. Porter is George and Diane Weiss Emeritus Professor of Education in the Graduate School of Education at the University of Pennsylvania. Currently, he is Director of the Institute for Education Sciences Center on Standards, Alignment, Instruction and Learning (C-SAIL). His research on teacher decision-making created the Surveys of Enacted Curriculum (SEC) tools for measuring content and content alignment as well as teacher log procedures. His evaluation of the Eisenhower program identified characteristics of effective professional development in math and science. He is senior author of the VAL-ED assessment of school leadership. His work in the IES center on middle school science curriculum developed an algorithm for building achievement tests aligned to a target such as a curriculum or content standards. He is an elected member of the National Academy of Education, Lifetime National Associate of the National Academies, past-President of the American Educational Research Association and recipient of that organization’s Distinguished Contributions to Research in Education Award.