# @science on Instagram

- **Type:** Image
- **Original URL:** https://www.instagram.com/p/DSslCrTE-Da
- **Gondola URL:** https://gondola.cc/posts/38313885-science-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/d85ccd9d63.jpg
- **Posted:** 2025-12-25T18:30:14.000+00:00
- **Account Owner:** Science 🧬 (@science) — https://gondola.cc/science

## Caption

Implementing a 10 a.m. start, led by The Centers for Disease Control and Prevention and the American Academy of Pediatrics in 2014, saw a decrease in student illness after 2 years of over 50%, and reverting to an 8:50 a.m. start reversed this improvement, leading to an increase of 30% in student illness. The 10:00 a.m. start was associated with a 12% increase in the value-added number of students making good academic progress (in standard national examinations), which was significant and equivalent to 20% of the national benchmark.⁠
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Implementing school start times later than 8:30 a.m., which may address the circadian delay in adolescents' sleep rhythms more effectively for evening chronotypes, appears to have few costs and substantial benefits.⁠
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#school #academia #biology #science #sciencenews

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## Tags

science, sciencenews, biology, academia, school

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