Researchers also said that they used a conservative approach and did not include other problems from too little sleep among children, including higher suicide rates, increased obesity and mental health issues, concluding that "the reported economic benefits from delaying school start times could be even higher across many U.S. states."

The Centers for Disease Control and Prevention also supports staring school later

"Not getting enough sleep is common among high school students and is associated with several health risks including being overweight, drinking alcohol, smoking tobacco, and using drugs, as well as poor academic performance, " according to the CDC.

And one of the reasons children don’t get enough sleep is early school start times, CDC officials said.

The American Academy of Pediatrics said that most teenagers start school too early and also recommends middle and high school students start school at 8:30 a.m. or later.