The Evaluation of Teachers and Schools Using Growth Models: Hope Versus Reality

• In Event: International Perspectives on Implementation and Effectiveness of Teacher Evaluation Models

Abstract

This paper begins with a short overview of the literature regarding Student Growth Modeling (SGM) and Value Added Modeling (VAM). Included are comments regarding the motivation and goals for this interest, from NCLB, and RTTT, as well as a more general interest from those concerned with teaching performance effectiveness. The paper progresses to a review of the literature as it addresses the assessment of teachers and schools using more formal statistical methods. From there, the paper moves to a consideration of a comparison of SGM models that permit aggregating across teachers or schools to provide teacher and school performance information (VAM). The focus is on relatively simple models. From there the paper addresses the literature, as it currently exists, regarding issues of reliability and validity as applied to evaluating teachers and evaluating schools. Finally the paper closes with some conjecture about the future and the likelihood of success. The overall tone of the paper is one of skepticism and pessimism regarding the likelihood of success in this endeavor.

Author

• Robert W. Lissitz, University of Maryland