My DS 9 & DD 8 are both up til about 9 on school nights. They usually watch TV til 9:30 or so. They get up at 7 for school and I have no problems getting them up so I don't make them go to bed any earlier. Weekends they can stay up as late as they want. Then they sleep later.
My oldest DS is 17 and he goes to bed whenever he feels like it. He's old enough to know how much sleep he needs and when he needs to be up so he decides on his own. I'd say it seems he's up til 11 or so on school nights and who knows how late on the weekends.
Jen
