But that does not mean young people should be indulged and allowed to stay in bed late."  Researchers at Norwalk Hospital's Sleep Disorders Center in Connecticut found that "Teens whose high schools have a delayed start time sleep longer and report less daytime sleepiness." One solution is for parents to impose earlier bedtimes on their teenagers.A recent study found that "Teens whose parents pack them off to bed at 10 p.m.
Too little sleep may contribute to mood swings and behavioral problems.
And sleepy teens who get behind the wheel may cause serious even deadly accidents."  The typical start time for most high schools is am, which can exacerbate this problem.
Some experts believe that teens' body clocks start later.
Tests by a professor at Oxford suggest that "students perform better in the afternoon, because their body clock is programmed about two hours later, possibly for hormonal reasons." Some experts believe that biological changes in teens affect their ability to sleep.
Some schools have experimented with later start times.
The study at Oxford found that "By delaying the start of school by one hour, and moving more demanding subjects to later in the day, then absenteeism and depression will fall...
Sleep deprivation in teens is prevalent enough to cause a growing concern among researchers, educators and parents.
Research has shown that lack of sleep affects teens' ability to function at school.
This can be achieved by discouraging them from drinking caffeine past 12 noon, and by keeping TVs, computers, and especially cell phones out of their room at night.