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…

Research Findings: This study is intended to widen the debate around the bachelor's degree (BA) as preparation for early childhood teaching when head teachers possess various levels of credentials and education. We examined classroom quality and teacher involvement in 231 classrooms sponsored by 122 different agencies, staffed and supervised by…

Public educational institutions are facing the problem of a shortage of experienced, certified, skilled teachers in the areas of special education, English as a Second Language, mathematics, biology or life science, bilingual education, and music. This shortage compounds difficulties in serving students in these areas. Reasons for this shortage…

Mounting pressure in the policy arena to improve teacher productivity either by improving signals that predict teacher performance or through creating incentive contracts based on performance--has spurred two related questions: Are there important determinants of teacher productivity that are not captured by teacher credentials but that can be…

Value-added models in education research allow researchers to explore how a wide variety of policies and measured school inputs affect the academic performance of students. Researchers typically quantify the impacts of such interventions in terms of "effect sizes", i.e., the estimated effect of a one standard deviation change in the…