more closely related to existing policy proposals. In analyses both of teacher mobility and of student performance, teacher … salaries are shown to have a modest impact. Teacher mobility is more affected by characteristics of the students (income, race …Important policy decisions rest on the relationship between teacher salaries and the quality of teachers, but the …

Most analyses of teacher quality end without any assessment of the economic value of altered teacher quality. This … paper combines information about teacher effectiveness with the economic impact of higher achievement. It begins with an … overview of what is known about the relationship between teacher quality and student achievement. This provides the basis for …

firms, but this may not hold in teacher labor markets characterized by salary rigidities, barriers to entry, and substantial … is the possibility that teacher turnover adversely affects the quality of instruction in schools serving predominantly …

Much of education policy focuses on improving teacher quality, but most policies lack strong research support. We use … student achievement gains to estimate teacher value-added, our measure of teacher quality. The analysis reveals substantial … variation in the quality of instruction, most of which occurs within rather than between schools. Although teacher quality …

that teacher mobility is much more strongly related to characteristics of the students, particularly race and achievement …

disentangles the separate factors influencing achievement with special attention given to the role of teacher differences and other … effects on achievement differences, these effects appear to derive most importantly from variations in teacher quality. A … lower bound suggests that variations in teacher quality account for at least 7« percent of the total variation in student …

It is widely believed that teacher turnover adversely affects the quality of instruction in urban schools serving … estimates of transition differences in teacher effectiveness, the adverse effects of turnover or both. After taking more … extensive steps to account for nonrandom sorting of students into classrooms and endogenous teacher exits and grade …

International differences in teacher quality are commonly hypothesized to be a key determinant of the large …-level measures of teacher cognitive skills using unique assessment data for 31 countries. We find substantial differences in teacher …-effects estimation exploiting within-country between-subject variation in teacher skills. A series of robustness and placebo tests …