Teacher evaluation has emerged as a major focus for reform at the highest levels of education policymaking, and for good reason. Most evaluations are based on scant evidence of actual effectiveness, produce inflated ratings, and provide teachers with little useful feedback. This paper offers policymakers and practitioners important "lessons…

Many educators choose to believe that learning to read and write is as natural as learning to listen and speak, even though scientifically based research does not support their belief. However, most educators (as well as the public) believe that most students must be taught mathematics to learn it. Moreover, there is a body of research evidence…