ST. LOUIS (KMOV.com) -- Some school districts are exploring the idea of starting school later to allow teenagers to get more sleep.
Medical experts say teenagers often don’t become sleepy until late at night because a circadian delay that happens during puberty.
That means “about 10 to 20 percent of teenagers are actually getting appropriate sleep" said Dr. John Spivey with Mercy Children’s Hospital.
Several St. Louis-area school districts told News 4 parents are the biggest objectors to moving back the start of the school day.
Click here to learn more about Mercy Clinic Children's Respiratory and Sleep Medicine.
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