Under the Every Student Succeeds Act, whole-school reforms will continue to be a prominent strategy for improving student outcomes in low-performing schools. As reform models have proliferated, so has research evaluating the impact in reform schools. However, previous evaluations have rarely examined unintended spillover effects in nonreform…

Teacher turnover occurs during and at the end of the school year, although documentation of within-year turnover currently rests on anecdotal evidence. On average, over 4.6% of teachers turn over during the school year, which amounts to 25% of total annual turnover. Teachers transfer within districts at higher rates at the beginning of the school…

Substantial teacher turnover poses a challenge to staffing public schools with effective teachers. The scope of the teacher retention challenge across school districts, however, remains poorly defined. Applying consistent data practices and analytical techniques to administrative data sets from 16 urban districts, we document substantial…

Research on teacher stability typically focuses on the extent to which teachers remain in the same school, district, or the teaching profession from one year to the next. I investigate another facet of stability--whether teachers remain in the grade they teach. Drawing on administrative data from a large district in California, I find that high…