HIGH SCHOOL STUDENTS WITH A DELAYED SCHOOL START TIME SLEEP LONGER, REPORT LESS DAYTIME SLEEPINESS 
259 high school students completed the School Sleep Habits Questionnaire by Zaw W. Htwe, MD, from Norwalk Hospital's Sleep Disorders Center in Norwalk in Connecticut. The results of this questionnaire consist of an increase in sleep time in these students which helped them with no problem in school. The school started 40 minutes later than usual (from 7:35am to 8:15am ) which increased 33 minutes in the teenagers sleep time on school nights. In my opinion, schools should start about 40 minutes later as shown in the method so learning is more successful. If students are having problems in school it may be regarding their sleep time and therefore schools should be concerned about a student's health as they care for their learning.
http://www.sciencedaily.com/releases/2008/06/080609071202.htm
Many students have been experiencing deterioration in sleep hygiene during their high school and college years. Jennifer Peszka from Hendrix College of Conway, Arkansas made a research with 89 beginning their freshman year in college and other who had finished their freshman year in a liberal arts college. The results were surprising. They consisted on students sleeping 41 minutes less than other classmates and their GPAs were decreasing below a B (evening types) and above a B (morning and intermediate types). In my opinion, if teachers want to see an academicals improvement in these students, victims of sleep deterioration, they must help them, especially those in evening types who don’t receive the sleep they need by educating them on this issue.
http://www.sciencedaily.com/releases/2009/06/090609072813.htm
WHY DOES LACK OF SLEEP AFFECT US DIFFERENTLY? STUDY HINTS IT MAY BE IN OUR GENES:

http://www.sciencedaily.com/releases/2010/10/101025161023.htm
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