My 8 year old is a night owl. I used to go round and round with him over bedtime, but I decided it was a hopeless cause. Now its in bed at 8:30, but he can read or watch TV until he falls asleep. Usually he is asleep by 10pm, but there have been nights where he still isn't asleep. And he is a pain to get up in the morning too. I am not sure what more I can do -- I know he isn't getting enough sleep some days, but I can't force the child to sleep when he isn't sleepy.
My 5 year old is another story, he goes to bed at 8:30 and is asleep as soon as his head hits the pillow.