Between the ages of six and thirteen, children require 9 to 11 hours of sleep. Having a consistent bedtime remains essential for school aged children. To perform to the best of their ability children must get adequate sleep and must be able to wake up early in the morning for school. Children with regular bedtimes and wake-up times tend to be better rested. Well-rested children also tend to be more alert, energetic, and less emotionally stressed. They are also better able to concentrate in school when they’ve had adequate sleep.