A new national study found that teen sleep is getting worse, with more students reporting unhealthy amounts of rest. Researchers found that 77% of U.S. high school students in 2023 were not getting the recommended 8–10 hours of sleep each night, up from 69% in 2007. 

Health experts say teenagers need sleep because their brains and bodies are still developing. The Centers for Disease Control and Prevention (CDC) warns that lack of sleep can hurt memory, focus, mood, and physical health. Students who do not get enough rest are also more likely to struggle in school. 

Many students say balancing homework, activities, and screen time makes sleep difficult. “By the time I finish practice, homework and everything else, there are no hours left to rest,” said junior Eli Hernandez. 

The effects are often seen during the school day. “Some mornings I’m so exhausted I can barely focus in class,” said junior Elena Rodriguez. “It feels like my brain is still asleep.” 

The American Academy of Pediatrics recommends middle and high schools start no earlier than 8:30 a.m. because teens naturally fall asleep later at night. Studies show that later start times can improve attendance, grades, and student alertness. 

“I wish school started later because mornings are the hardest part of my day,” said sophomore Aaliyah Evans. “Students would come ready to learn.” 

Experts recommend limiting screen time before bed, keeping a consistent sleep schedule, and prioritizing rest. As teen sleep problems continue to grow, many families are asking whether later school start times could be part of the solution.