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...

Using data on elementary and middle school math and reading outcomes for Pennsylvania students, this working paper found that school value-added provides little useful information for comparing the general leadership skills of different principals when these comparisons include some principals...

This report summarizes research findings and implementation practices for teacher and principal value-added models (VAM) as a first step in the Team Pennsylvania Foundation’s pilot project to inform the development of a full, statewide model evaluation system. The report selected 21 empirical...