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...

Since their inception in 1992, the number of charter schools has grown to more than 6,000 in 40 states, serving more than 2 million students. Various studies have examined charter schools’ impacts on test scores, and a few have begun to examine longer-term outcomes including graduation and...