Yun Xiang is a Research Specialist at the Northwest Evaluation Association. Yun’s areas of expertise include growth modeling, program evaluation, and handling of large datasets. Her recent published works and presentations include an investigation of achievement gaps and summer loss, applications of growth modeling in evaluating schools and addressing student mobility, an analysis of school productivity by comparing different value-added models, and research involving the professional satisfaction of teachers. Yun holds a Ph.D. in Educational Research, Measurement and Evaluation from Boston College, a M.Ed. in Curriculum and Instruction from Boston University, and a B.A. in English Education from Xiangtan Normal University, China.