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TOPIC:
DOES DELAYED SCHOOL START TIME MAKE STUDENTS EXERCISE LESS? EVIDENCE FROM SOUTH KOREA
ABSTRACT
In this paper, we study the effects of delayed school start time (DSST) on students’ time use for exercise in South Korea. DSST often eliminates zero period or before-school activities without changes in school end time, which make students spend less time in school. To keep the time use for study stable, schools have an incentive to reduce students' other time use. Using difference-in-differences and synthetic control approaches, we find evidence that is consistent with our conjecture. The DSST reduced students’ hours of exercise during school without increasing time use for exercise after school. The results imply that DSST may not improve students’ well-being as much as expected by biological mechanisms.