A research from the American Academy of Pediatrics (AAP) has found that due to early schools, most teenagers in America are not able to get proper sleep needed to concentrate and remain healthy.

Less than one in five middle and high schools in the United States start at 8.30 am or later, which is the recommended time. Teenagers are meant to asleep longer than adults, stated the researchers. The Centers for Disease Control and Prevention (CDC) stated that if children will not get proper amount of sleep then it could prove harmful for their academic performance.

Study’s lead researcher Anne Wheaton, an epidemiologist in CDC's Division of Population Health, said getting proper sleep is important for health, safety and academic performance. But due to early school start times, many adolescents are not able to have the sleep they require.

In 2014, the AAP requested secondary schools to delay their school timings, so that children can get 8.5 to 9.5 hours of night sleep. But just 17.7% of US high schools started at the recommended hour. In fact, many parents have urged schools to delay school timings, but administrations often refused.

“Insufficient sleep is common among high school students and is associated with several health risks such as being overweight, drinking alcohol, smoking tobacco and using drugs”, affirmed the CDC study. A 2013 CDC study has found that around two out of three US students are sleep deprived.