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’...

Benjamin W. Arold prepared this study while he was working at the Center for Economics of Education at the ifo Institute. The study was completed in March 2022 and accepted as doctoral thesis by the Department of Economics at the LMU Munich. It consists of four distinct empirical essays that...