Do increased instruction hours improve the performance of all students? Using PISA scores of students in ninth grade, we analyse the effect of a German education reform that increased weekly instruction hours by two hours (6.5 percent) overalmost five years. In the additional time, students are...

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...

Does relaxing strict school discipline improve student achievement, or lead to classroom disorder? We study a 2012 reform in New York City public middle schools that eliminated suspensions for non-violent, disorderly behavior. Math scores of students in more-affected schools rose by 0.05...

This paper demonstrates how a natural experiment in education can be used to estimate causal effects. The Swedish compulsory school reform extended basic education gradually across cohorts and municipalities, allowing for a difference-in-differences analysis. The paper summarizes the literature...

This paper evaluates the impact on earnings, pensions, and other labor market outcomes of two parallel educational reforms increasing instructional time in Swedish primary school. The reforms extended the compulsory years of schooling from 6 to 7 years and the annual term length from 34.5/36.5...