Results from a sample of 1,013 Georgia principals who rated 12,617 teachers are used to compare holistic and analytic principal judgments with indicators of student growth central to the state's teacher evaluation system. Holistic principal judgments were compared to mean student growth percentiles (MGPs) and analytic judgments from a formal…

This is a keynote presentation given at AERA on developing a validity agenda for growth models in a large scale (e.g., state) setting. The emphasis of this presentation was to indicate that growth models and the validity agenda designed to provide evidence in supporting the claims to be made need to be personalized to meet the local or…

The country is at a crossroads in implementing measures of educator effectiveness in K-12 classrooms. While the vast majority of states require student growth and achievement to be factored into teacher and principal evaluations, most states and school districts are now grappling with the practical realities of implementing these policies. In this…