Katherine Furgol Castellano is a principal research scientist in ETS Research Institute. She co-leads the innovations in large-scale assessment research program with Daniel McCaffrey. Katherine works on improving student group score reporting by moving beyond averages to visualizing score variability and providing context for group score differences. She also is a leading researcher in student growth models with research on the impact of measurement error on growth scores at the student and aggregate (e.g., teacher, school, district) levels as well as approaches for improving the accuracy and year-to-year stability of aggregate growth measures. In addition, Castellano has served as a methodologist on several projects, including a National Science Foundation–funded grant on assessing content knowledge for teaching (Award No. 1813254) and an Organisation for Economic Co-operation and Development–sponsored international video study project on teaching practices and quality.
Katherine received a Ph.D. in educational measurement and statistics in 2011 and an M.S. in statistics in 2008 from the University of Iowa. Previously, Castellano was an Institute for Education Sciences postdoctoral fellow at the University of California, Berkeley (2012–2013).
Katherine Castellano | LinkedIn
Last Updated: 10/1/2025