Value-added models of teacher effectiveness yield consistent estimates of teacher quality under the assumption that students are randomly assigned to classrooms conditional on ability. Rothstein (2010) tested and rejected this underlying sort- ing assumption, casting doubt on the usefulness of...

Information about teachers' effectiveness at the hiring stage is particularly scarce despite its importance for personnel decisions. Using the German setting of teacher training, I investigate the relationship of teachers' pre-service cognitive and pedagogical skills as measured by two state...

Teachers are among the most important school-provided determinants of student success. Effective teachers improve students' test scores as well as their attendance, behavior, and earnings as adults. However, students do not enjoy equal access to effective teachers. This article reviews some of...

International differences in teacher quality are commonly hypothesized to be a key determinant of the large international student performance gaps, but lack of consistent quality measures has precluded testing this. We construct country-level measures of teacher cognitive skills using unique...

This research examines whether teacher licensure test scores and other teacher qualifications affect high school student achievement. The results are based on longitudinal student-level data from Los Angeles. The achievement analysis uses a value-added approach that adjusts for both student and...