Mounting pressure in the policy arena to improve teacher productivity either by improving signals that predict teacher performance or through creating incentive contracts based on performance--has spurred two related questions: Are there important determinants of teacher productivity that are not captured by teacher credentials but that can be…

Over the last decade, virtually every state has launched a school accountability program in response to public concern over failing schools. Proponents of school accountability argue that standards can energize school systems, by putting pressure on schools to help all students. After almost a decade of accountability reforms, content standards…