Judy Tang is a Senior Research Associate at Westat in Rockville, Maryland. Her expertise lies in large-scale national and international education studies. Her research focuses on the relationships between student achievement and contextual factors such as school climate, classroom environments, teacher instructions and experiences, student attitudes toward learning, socioeconomic status, and opportunity-to-learn measures. Before joining Westat, Judy taught in middle and high schools and at the college level. She has also worked as a senior research project coordinator in the university setting, overseeing the preparation of operational and statistical reports for management and regulatory agencies.