Feedback is an essential ingredient for professional growth, but teachers receive limited feedback that is actually useful. Audrey Amrein-Beardsley and Tray Geiger discuss the flaws in two common forms of teacher feedback, value-added measures and classroom observations, often used as part of a summative evaluation. They suggest that student…

Recent lawsuits reveal common mistakes plaguing current teacher evaluation systems. Drawing on arguments in court documents for prominent cases, the authors find that evaluation systems using value-added measures (VAM) suffer from a) inconsistent and unreliable teacher ratings, b) bias toward and against teachers of certain types of students, c)…

In 2016, the federal government proposed and adopted the Every Student Succeeds Act, which retracted the federal government's prior control over states' teacher evaluation systems, permitting more local control. Kevin Close, Audrey Amrein-Beardsley, and Clarin Collins collected information from states to determine the degree to which states were…

Being an expert involves explaining how things are supposed to work, and, perhaps more important, why things might not work as supposed. In this study, researchers surveyed scholars with expertise in value-added models (VAMs) to solicit their opinions about the uses and potential of VAMs for teacher-level accountability purposes (for example, in…

There is a growing consensus that evidence of teachers' contributions to student learning should be a component of teacher evaluation systems, along with evidence about the quality of teachers' practice. Value-added models (VAMs), designed to evaluate student test score gains from one year to the next are often promoted as tools to accomplish this…