We examine the dynamic nature of teacher skill development using panel data on principals' subjective performance ratings of teachers. Past research on teacher productivity improvement has focused primarily on one important but narrow measure of performance: teachers' value-added to student achievement on standardized tests. Unlike value-added,…

Teacher teams are increasingly common in urban schools. In this study, we analyze teachers' responses to teams in six high-poverty schools. Teachers used two criteria to assess teams' goodness of fit in meeting the demands of their work: whether their teams helped them teach better and whether the team contributed to a better school. Their…

District- and state-level efforts to remake teacher evaluation systems are among the most substantial and widely adopted reforms that U.S. public schools have experienced in decades. Research on these next generation of evaluation systems has focused overwhelmingly on policy goals, program designs, and performance measures. However, still very…

Although wide variation in teacher effectiveness is well established, much less is known about differences in teacher improvement over time. We document that average returns to teaching experience mask large variation across individual teachers and across groups of teachers working in different schools. We examine the role of school context in…

For over a century, school systems in the U.S. have attempted to improve instructional quality by investing in the education and training of their teachers. Today, over 90% of teachers report participating in some form of professional development (PD). Practitioners have responded to critiques of PD by re-envisioning it in the form of…