Students who took the biology class after the later start time got final grades that were 4.5 percent higher than students who took the class when it started earlier, reports NPR.
“When we started at 7:50 a.m. there would always be stragglers who were having a hard time getting here,” says Cindy Jatul, who teaches biology at Roosevelt High School. Students were groggy and noticeably different from students who took her class later in the day. “For example, if I gave them a project in the lab, they would be the most likely class to mess up,” she says.
