Yi Du is a senior psychometrician in the Research & Development division at ETS. Du received a Ph.D. in measurement, evaluation, and statistical analysis from the University of Chicago in 1995. She received an M.S. and a B.S. in information management systems from Beijing University (Beijing, China) in 1984 and 1982. She is also a certified project management professional with certification from the Project Management Institute.
She works with the California Smarter Balanced Assessment Program and the California Spanish Assessment as lead psychometrician. Before joining ETS, Du worked at the Data Recognition Corporation as a senior director for K–12 state assessment programs. She is a reviewer for the National Conference on Student Assessment of the Council of Chief State School Officers. Her research interests include computer adaptive testing, next generation assessments, and item response modeling.