The success of students with disabilities (SWDs) depends on access to high-quality general education teachers. Yet, teacher value-added measures (VAMs) generally fail to distinguish between effectiveness in educating students with or without disabilities. Using data from the Los Angeles Unified School District, we create two VAMs: one focusing on…

We used longitudinal data on high school students in Washington State to assess the relationships between English Language Arts (ELA) teacher qualifications and the high school and postsecondary outcomes of their students, and whether these relationships differed for students with and without disabilities. We found that students assigned to…

Increasingly, states and teacher education programs are establishing minimum requirements for cooperating teachers' (CTs') years of experience or tenure. Undergirding these policies is an assumption that to effectively mentor preservice teachers (PSs), CTs must themselves be instructionally effective. We test this assumption using statewide…

We use a novel database of the preservice apprenticeships ("student teaching placements") of teachers in Washington State to investigate the relationship between mentor effectiveness (as measured by value added) and the future effectiveness of their mentees. We find a strong, positive relationship between the effectiveness of a teacher's…

Retaining effective teachers is a key policy priority nationwide, particularly in districts that serve large numbers of disadvantaged students. We investigate whether a change in the Miami region's placement strategy was accompanied by changes in teacher attrition and mobility decisions. Our results suggest that the increased concentration of TFA…

Are equal educational opportunities sufficient to narrow long-standing economic and racial inequalities in achievement? In this paper, I test the hypothesis that poor and minority students benefit less from effective elementary school teachers than their non-poor and White peers, thus exacerbating inequalities. I use administrative data from…

In this paper I use a rich longitudinal database from Florida to compare the characteristics of alternatively certified teachers with their traditionally prepared colleagues. I analyze the relative effectiveness of teachers who enter the profession through different pathways by estimating value-added models of student achievement. In general,…