The Video Assessment of Interactions and Learning (VAIL), a video-based assessment of teacher understanding of effective teaching strategies and behaviors, was administered to preservice teachers. Descriptive and regression analyzes were conducted to examine trends among participants and identify predictors at the individual level and program level. Results from this study demonstrate that a standardized assessment used previously with in-service teachers can be implemented in a teacher education program. Analysis shows variability in preservice abilities to detect effective teaching strategies and behaviors that is partially explained by teacher education program factors. (Contains 2 figures and 7 tables.)