Later start times in school = more sleep = better grades

This study took place in Norwalk Hospital's Sleep Disorder Center, leaded by Zaw W. Hwte. First they averaged the hours of sleep that students recieved on normal school days, and it turned out to be 422 minutes, which was increased 33 minutes when school start time was delayed 40 minutes. The study proved that more time of sleep can influence the quality of the student

American Academy of Sleep Medicine. "High School Students With A Delayed School Start Time Sleep Longer, Report Less Daytime Sleepiness." ScienceDaily, 11 June 2008. Web. 3 November 2010. <http://www.sciencedaily.com­ /releases/2008/06/080609071202.htm>.