Heterogeneous effects of comprehensive vs. single-track academic schools Evidence from admission lotteries

We use admission lotteries to study how enrollment in a single-track academic school instead of a comprehensive school affects achievement of students in Amsterdam. The two types of schools score differently on measures of school quality and enrollment in a single-track school instead of a comprehensive school implies exposure to better and richer peers. Yet, school resources and the school curriculum are very similar. Different groups of students are differentially affected by this treatment. Girls from lower-income neighborhoods benefit whereas boys from these neighborhoods are harmed. For students from higher-income neighborhoods, it does not matter which type of school they attend.