Most people don't realize how important sleep is to learning. The average American needs 8 hours of sleep, but that value is much higher for children. The average grade school child needs at least 10 hours of sleep, with 11 preferred. Even high school students can benefit from 9 or more hours of sleep a night.
The reason why sleep is so important is it acts as a sort of recharge for the brain. While the mind is in REM sleep, the dream sleep, the mind processes through all of the problems of the day before. That is why things that were on your mind appear in dreams. Dreams help the mind to resolve...