We have a teenage son ( just had his 17th birthday ) and during the summer he has been going to bed later and later.It's around 3.30am lately...The problem is he wakes us up even though he tries to creep about then we have trouble getting back to sleep. Also, he looks like a zombie in the morning and can't wake up!
Do you think it would be unreasonable to expect him to go to bed around midnight? Even if he reads in his room at least he'll be resting and he won't wake us up