Studies have found that starting school at 10 a.m. helps teenagers sleep better, feel healthier, and perform stronger in exams.
Studies have found that pushing the school day to start at 10:00 a.m. can make a big difference to teenage health and academic success. Research following students aged 13 to 16 found that the later start time led to more sleep, better focus in class, and improved overall well-being.
The change had a big impact on attendance — illness-related absences dropped by more than 50% when lessons began later in the morning. Academic results improved too, with a noticeable jump in the number of students making strong progress in their exams.
Experts explain that teenagers’ body clocks naturally shift during adolescence, making it harder for them to fall asleep early and wake up for dawn starts. By syncing school schedules with students’ natural rhythms, they not only feel more energised but also retain information better.
When schools that tried later start times went back to earlier hours, illness rates climbed again, reinforcing the link between good sleep and better health. Researchers say the evidence is clear — giving teens a little more time in bed could be a simple step towards boosting both their grades and their well-being.
The study was done by Paul Kelley from Research Associate at University of Oxford. The research makes a pretty strong case for schools to actually listen to the science of sleep when setting schedules. Experts say matching class times to how teens’ bodies naturally work isn’t just about making mornings easier — it’s about keeping them healthier and giving everyone a fair shot at success.”
