The five thoughtful papers included in this issue of "Educational Researcher" ("ER") raise new questions about the use of value-added methods (VAMs) to estimate teachers' contributions to students' learning as part of personnel evaluation. The papers address both technical and implementation concerns, considering potential…

There is a widespread consensus among practitioners, researchers, and policy makers that current teacher evaluation systems in most school districts do little to help teachers improve or to support personnel decision making. For this reason, new approaches to teacher evaluation are being developed and tested. There is also a growing consensus that…

On August 9, 2012, the Institute of Education Sciences (IES) convened a meeting of researchers and U.S. Department of Education (ED) and IES staff to discuss recent advances in measuring teacher effectiveness. The objectives of the meeting were to: (1) Identify and discuss recent advances in the use of value-added models (VAMs) and student growth…

While some proponents of testing rest their hopes for stronger learning on the expectation that tests alone will motivate students to work harder, most posit that better learning will result primarily from better teaching--due to curriculum changes, greater attention to student needs, stronger teacher motivation, or focused investments in…