Ds1 is nine next week and his bedtime is currently eight o'clock but he often takes advantage of the fact that it is still light outside to read or play tapes etc in his room long after he has gone to bed - I am very careful to remove the gameboy from his room each night otherwise he would play that long after dark! He doesn't wake up as early as he used to, but he is still usually up long before me (I get up at 7) and at his laziest, he might lie in bed, again reading, until 7:30.
All in all, he doesn't seem to need as much sleep as I am trying to make him have. I don't want to let him stay up too late though as I value some time in the evening with no children.
If you have or have had a nine year old or remember what time you went to bed when you were nine, I would welcome your response. Thanks.