State-specific licensing policies and pension plans create mobility costs for educators who cross state lines. We empirically test whether these costs affect production in schools--a hypothesis that follows directly from economic theory on labor frictions--using geo-coded data from the lower-48 states. We find that achievement is lower in…

As public budgets have grown tighter over the past decade, states and school districts have sought ways to control the growth of spending. One increasingly common strategy employed to rein in costs is to offer experienced teachers with high salaries financial incentives to retire early. Although early retirement incentive (ERI) programs have been…

This study examined whether being taught by a teacher with a high "value-added" improves a student's long-term outcomes. The study analyzed more than 20 years of data for nearly one million fourth- through eighth-grade students in a large urban school district. The study reported that having a teacher with a higher level of value-added…