Lily An is a PhD student in Education Policy and Program Evaluation at Harvard University and a PIER Fellow at the Center for Education Policy Research. Her research interests are in educational measurement, causal inference methods, and school accountability policies. Prior to her doctoral studies, Lily was a research analyst at Brown University for an RPP with the Massachusetts Department of Elementary and Secondary Education. She holds an Ed.M. in Education Policy and Management from the Harvard Graduate School of Education and an B.A. in Statistics from Williams College.