You should not go to school before 8:30.

American experts indicate that to ensure the health of teenagers, middle and high schools should only start classes from 8:30 onwards.

Every parent has seen their child refuse to get up and try to sleep in before school. Now, American researchers say school start times should be adjusted to give children adequate rest.

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According toCBS NewsThe American Society of Sleep Medicine (ASSM) recommends that middle and high schools start classes at 8:30 a.m. or later. This helps reduce tardiness and truancy while also increasing safety while driving. The adjustment also ensures that students are alert and ready to learn.

"Starting school too early deprives children of sleep. Chronic sleep deprivation is linked to a host of problems, including poor school performance, depression, and car accidents," said Dr. Nathaniel Watson, former president of AASM. "Starting school at 8:30 or later gives children the opportunity to get the rest they need to learn and function most effectively."

Previously, the AASM recommended that adolescents aged 13-18 should sleep 8-10 hours per night. However, the US Centers for Disease Control and Prevention pointed out that this standard is hardly met, with more than 60% of high school students sleeping less than 7 hours on weekdays.

In Vietnam, according to statistics published by pediatrician Johnathan Halevy at a conference on the consequences of sleep deprivation in 2016, half of preschool children and 40% of adolescents sleep less than the required amount. The main reason is due to daily schedules with a large amount of homework, dense social activities and the habit of using electronic devices.

According to VNE