This paper presents the first causal evidence on the effects of school accountability systems on teacher labor markets. We exploit a 2002 change in Florida's school accountability system that exogenously shocked some schools to higher accountability grades and others to lower accountability...

We examine the measurement and prediction of worker productivity using a sample of teachers and school principals. We find that principals' evaluations are positively associated with teachers' estimated contributions to students' test scores (value-added), and are better predictors of teacher...