We consider the challenges and implications of controlling for school contextual bias when modeling teacher preparation program effects. Because teachers are not randomly distributed across schools, failing to account for contextual factors in achievement models could bias preparation program estimates. Including school fixed effects controls for…

Discusses the quality of school-level data collected as part of state accountability systems, including the reliability and validity of school-level test scores as a measure of the value added by schools to student learning, outlining ways that these data can be usefully analyzed; illustrating challenges inherent in doing so; and discussing…