We examine whether and how teachers' major fields of study affect students' achievement, exploiting within-student variation across subfields in natural science (i.e., physics, chemistry, biology, and Earth science). Using middle-school students' data from the Trends in International Mathematics...

We use six years of data on student test performance to evaluate the effectiveness of certified, uncertified, and alternatively certified teachers in the New York City public schools. On average, the certification status of a teacher has at most small impacts on student test performance....

We use six years of data on student test performance to evaluate the effectiveness of certified, uncertified, and alternatively certified teachers in the New York City public schools. On average, the certification status of a teacher has at most small impacts on student test performance....

This paper analyzes the impact of longer school schedules on children's 2nd grade reading comprehension skills in Chile. In a setting where families choose schools, we identify the causal effect of longer schedules with instrumental variables, using the local availability of full-day schools as...

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...