Headlines offer a plethora of opinions and arguments both for and against proposed and newly implemented teacher evaluation systems all over the United States. Hardly anyone balks at the idea of evaluating teachers, but many question whether these new evaluation systems really improve teaching and learning. The author's experience with the new…

Value-added models are a specific type of "growth model," a diverse group of statistical techniques to isolate a teacher's impact on his or her students' testing progress while controlling for other measurable factors, such as student and school characteristics, that are outside that teacher's control. Opponents, including many teachers, argue…

In 2009, the Bill and Melinda Gates Foundation funded the investigation of a $45 million question: How can we identify and develop effective teaching? Now that the findings from their Measures of Effective Teaching (MET) project have been released, it's clear they asked a simpler question, namely, What other measures match up well with value-added…

Critics of the public release of teacher evaluation scores sometimes liken these ratings to the scarlet letter worn by Hester Prynne in Nathaniel Hawthorne's classic novel. The comparison is apt. But public school teachers who are subjected to public shaming because of their students' test scores can rarely expect the opportunities for redemption…

In 2010, after several years of strong opposition from teachers, the South Korean government announced a new teacher evaluation system--Evaluation of Teacher Professional Development--which would be required for all teachers. The new system seeks to foster teacher professional development and, consequently, improve the quality of education.…

Recently, two of the authors (Amrein-Beardsley & Collins, 2012) studied the impact of Education Value-Added Assessment System (EVAAS), a value-added model used to judge Houston teachers' performance. They examined the cases of four teachers who were terminated in summer 2011, at least in part because of their subpar EVAAS scores. Talking to…

Because they focus on the quality of instruction, teacher evaluations can be powerful catalysts for teacher and school improvement. But today, the typical teacher evaluation consists of a single, fleeting classroom visit by an administrator untrained in evaluation. Often he or she wields a checklist of classroom conditions and teacher behaviors…

Lee Shulman's vision of good teaching includes nurturing students' moral and spiritual development, civic engagement, and socialization. High-stakes tests do not embody standards. When evaluating and rewarding teachers, mentoring and monitoring functions should be separated. National Board for Professional Teaching Standards improvement incentives…