Value-Added Estimates for Phase 1 of the Pennsylvania Teacher and Principal Evaluation Pilot

This report describes the development of value-added models for estimating the contributions of Pennsylvania teachers and principals toward the achievement growth of their students. Estimates were obtained during the first phase of a multiyear pilot to develop new evaluation systems for teachers and principals. The report also examines whether teachers with higher classroom observation scores on specific professional practices among those who participated in the first phase tended to have greater impacts on student achievement, as measured by value-added models.