Community colleges are complex organizations and assessing their performance, though important, is difficult. Compared to four-year colleges and universities, community colleges serve a more diverse population and provide a wider variety of educational programs that include continuing education and technical training for adults, and diplomas,…

The gold standard in making causal inference on program effects is a randomized trial. Most randomization designs in education randomize classrooms or schools rather than individual students. Such "clustered randomization" designs have one principal drawback: They tend to have limited statistical power or precision. This study aims to…

While the importance of principals has long been recognized by educators and researchers, empirical studies on the effectiveness and distribution of principals have been undermined by the lack of data to study principals, their complex work, and their impact on school outcomes. In fact, "little systematic evidence exists about the…

Redistributing highly effective teachers from low- to high-need schools is an education policy tool that is at the center of several major current policy initiatives. The underlying assumption is that teacher productivity is portable across different schools settings. Using elementary and secondary school data from North Carolina and Florida, this…

Using detailed data from North Carolina, this paper examines the frequency, incidence, and consequences of teacher absences in public schools, as well as the impact of a policy designed to reduce absences. The incidence of teacher absences is regressive: when schools are ranked by the fraction of students receiving free or reduced-price lunch,…

In education, teacher experience is probably "the" key factor in personnel policies that affect current employees: it is a cornerstone of traditional single-salary schedules; it drives teacher transfer policies that prioritize seniority; and it is commonly considered a major source of inequity across schools and, therefore, a target for…

Research has consistently shown that teacher quality is distributed very unevenly among schools to the clear disadvantage of minority students and those from low-income families. Using information on teaching spells in North Carolina, the authors examine the potential for using salary differentials to overcome this pattern. They conclude that…

This paper examines whether teachers in schools serving students from high-poverty backgrounds are as effective as teachers in schools with more advantaged students. The question is important. Teachers are recognized as the most important school factor affecting student achievement, and the achievement gap between disadvantaged students and their…

Extensive education research on the contribution of teachers to student achievement produces two generally accepted results. First, teacher quality varies substantially as measured by the value added to student achievement or future academic attainment or earnings. Second, variables often used to determine entry into the profession and…

Education researchers and policymakers agree that teachers differ in terms of quality and that quality matters for student achievement. Despite prodigious amounts of research, however, debate still persists about the causal relationship between specific teacher credentials and student achievement. In this paper, we use a rich administrative data…