In 2011, a large university in Tehran launched a policy of gender separation at classroom level without publicly announcing it beforehand. The current paper utilizes this natural experiment to identify the causal impact of participation in single-sex versus mixed classrooms on students’...

This paper examines the impacts of the Michigan Merit Curriculum (MMC), a statewide college-preparatory curriculum that applies to the high school graduating class of 2008 and later. We use a student, longitudinal database for all public school students in Michigan for the main analyses, and...

Middle- and upper-class parents tend to think that school systems in which students from different socio-economic backgrounds learn together in the same schools would promote equality of opportunity but would harm their children. I investigate this belief, making both a conceptual and a...