In 2010, Teach For America (TFA) launched a major expansion effort, funded in part by a five-year Investing in Innovation scale-up grant from the U.S. Department of Education. To examine the effectiveness of TFA elementary school teachers in the second year of the scale-up, we recruited thirty-six schools from ten states and randomly assigned…

Whereas subject-area specialization is common practice in secondary grades, little is known about its incidence and impact in elementary schools. In this study we use data from North Carolina elementary schools to assess which teachers specialize and estimate whether specialization is associated with teacher effectiveness and school achievement.…

Current uses of value-added modeling largely ignore or assume away the potential for teachers to be more effective with one type of student than another or in one subject than another. This paper explores the stability of value-added measures across different subgroups and subjects using administrative data from a large urban school district. For…

Research on the effectiveness of educational inputs, particularly research on teacher effectiveness, typically overlooks teachers' potential impact on behavioral outcomes, such as student attendance. Using longitudinal data on teachers and students in North Carolina I estimate teacher effects on primary school student absences in a value-added…

We investigate whether commonly used value-added estimation strategies produce accurate estimates of teacher effects under a variety of scenarios. We estimate teacher effects in simulated student achievement data sets that mimic plausible types of student grouping and teacher assignment scenarios. We find that no one method accurately captures…

Most teacher layoffs during the Great Recession were implemented following inverse-seniority policies. In this paper, I examine the implementation of a discretionary layoff policy in Charlotte Mecklenburg Schools. Administrators did not uniformly lay off the most or least senior teachers but instead selected teachers who were previously retired,…

Since 2002, public school teachers in Florida have been permitted to choose between a defined benefit (DB) and a defined contribution (DC) retirement plan. We exploit this unique policy environment to study new teachers' revealed preferences over pension plan structures. Roughly 30 percent of teachers hired between 2003 and 2008 selected the DC…

State policies affect the qualifications of beginning teachers in numerous ways, including regulating entry requirements, providing incentives for graduate degrees, and subsidizing preparation programs at public universities. In this paper we assess how these policy choices affect student achievement, specifically comparing traditionally prepared…

This article presents findings from the first independent, third-party appraisal of the impact of the Teacher Advancement Program (TAP) on student test score gains in mathematics. TAP is a comprehensive school reform model designed to attract highly effective teachers, improve instructional effectiveness, and elevate student achievement. We use a…

In this policy brief we argue that there is little debate about the statistical properties of value-added model (VAM) estimates of teacher performance, yet, despite this, there is little consensus about what the evidence about VAMs implies for their practical utility as part of high-stakes performance evaluation systems. A review of the evidence…

Do charter schools draw good teachers from traditional, mainstream public schools? Using a thirteen-year panel of North Carolina public schoolteachers, I find that less qualified and less effective teachers move to charter schools, particularly if they move to urban schools, low-performing schools, or schools with higher shares of nonwhite…

The literature on effective schools emphasizes the importance of a quality teaching force in improving educational outcomes for students. In this article we use value-added methods to examine the relationship between a school's effectiveness and the recruitment, assignment, development, and retention of its teachers. Our results reveal four key…

We use a regression discontinuity strategy to produce causal estimates for the effect of remediation under Florida's test-based promotion policy on multiple outcomes for up to five years after the intervention. Students subjected to the policy were retained in the third grade, were required to be assigned to a high-quality teacher during the…

Nonrandom assignment of students to teachers can bias value-added estimates of teachers' causal effects. Rothstein (2008, 2010) shows that typical value-added models indicate large counterfactual effects of fifth-grade teachers on students' fourth-grade learning, indicating that classroom assignments are far from random. This article quantifies…

Certain studies and the California legislature have recently concluded that seniority preference rules in teacher collective bargaining agreements facilitate a teacher "quality gap" by permitting senior teachers to transfer to schools with higher-performing and more affluent children. This study examines the effects of such transfer…