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...

In this paper I use a rich longitudinal data base from Florida to compare the characteristics of alternatively certified teachers with their traditionally prepared colleagues. I then analyze the relative effectiveness of teachers who enter the profession through different pathways by estimating...

Using student-level microdata from 2000-2001 to 2004-2005 from Florida and North Carolina, we compare the effectiveness of teachers in schools serving primarily students from low-income families (70% free-and-reduced-price-lunch students) with teachers in schools serving more advantaged...

In this paper we analyze the efficiency effects of state-mandated exclusive distribution territories in the U.S. beer industry. Using panel data for 48 states over a 10-year period we estimate both fixed-effects and instrumental-variable models of the impact of mandated exclusive territories on...