Does a delayed school start time cause students to exercise less? Evidence from South Korea

Area of Science:

• Educational Psychology
• Public Health
• Economics

Background:

• Delayed school start times (DSST) are proposed to improve student well-being and academic outcomes.
• Potential impacts on students' time allocation and broader human capital development require investigation.

Purpose of the Study:

• To examine the effects of a DSST on students' time use and human capital accumulation in South Korea.
• To assess whether DSST implementation affects non-academic activities like physical education and overall health status.

Main Methods:

• Utilized a difference-in-differences (DID) approach to analyze changes in student time use.
• Compared outcomes before and after the implementation of a DSST, controlling for confounding factors.

Main Results:

• DSST was associated with a reduction in time allocated to gym class.
• No significant negative impact on students' health status was observed.
• Academic achievement, as indicated by test scores, is supported by prior research.

Conclusions:

• DSST can enhance academic achievement without compromising student health or other human capital development.
• Schools may reallocate students' time use, necessitating careful consideration of curriculum and activity scheduling.
• Findings support the broader implementation of DSSTs as a beneficial educational policy.