The effectiveness of single-sex schools through out-of-school activities: evidence from South Korea

Youjin Hahn, Liang Choon Wang

Research output: Contribution to journalArticleResearchpeer-review


Students’ out-of-school activities and time use can play a crucial role in facilitating the effect of schools on students’ achievement. Using data from Seoul, South Korea, where students are randomly assigned into schools, we show that when single-sex schools improve students’ test performance, their effect is positive on students’ time spent on study-related out-of-school activities. Our results indicate that out-of-school activities explain roughly 21%–30% of the effect of single-sex schooling on test performance.

Original languageEnglish
Pages (from-to)369-393
Number of pages25
JournalOxford Bulletin of Economics and Statistics
Issue number2
Publication statusPublished - Apr 2019

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