If teens need 8 to 10 hours of sleep to do their best and naturally go to sleep around 11:00 pm, one way to get more sleep is to start school later.
Teens' natural sleep cycle puts them in conflict with school start times. Most high school students need an alarm clock or a parent to wake them on school days. They are like zombies getting ready for school and find it hard to be alert and pay attention in class. Because they are sleep deprived, they are sleepy all day and cannot do their best.
Schools that have set later bell times find that students do not go to bed later, but get one hour more of sleep per school night, which means five hours more per week.
Enrollment and attendance improves and students are more likely to be on time when school starts. Parents and teachers report that teens are more alert in the morning and in better moods; they are less likely to feel depressed or need to visit the nurse or school counselor.
While everyone is accustomed to having a bad morning here and there – feeling irritable, unhappy or even sad, NSF's 2006 Sleep in America poll found that