Later school bells: can a simple schedule change boost teen health?
NCT ID NCT06657482
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times
Summary
This completed study in Norway looked at whether delaying school start times by one to two hours on Mondays and Tuesdays helps high school students sleep longer, feel less sleepy during the day, and improve their mental health and grades. Over 580 first-year students participated. The goal was to see if a simple schedule change could make a real difference in teens' well-being.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
delayed school start time
What this could lead to
If successful, this could provide evidence for schools to adopt later start times to help teens sleep better and feel healthier.
What could go wrong
This is a completed observational study, not a treatment trial. Results may not apply to all schools or countries, and benefits might be small or inconsistent.
Disclaimer
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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University of Bergen
Bergen, Vestland, 5019, Norway