Lucas (11) is in bed by 8:30 on school nights, he is always up around 6 no matter when he goes to bed, so to guarantee at least 9 hours sleep 8:30 it has to be! On non-school nights he's in bed by 10 at the latest as he just snaps with tiredness otherwise.
Rheiya (14) is in bed by 10 on school nights and usually around midnight on non-school nights.
Elijah (16) is in bed by 10:30 on school nights and around midnight on non-school nights. She usually reads in bed for an hour or so on non-school nights, well she tells me it's for an hour

The girls don't like being dictated school night bedtimes but if they go any later they are a nightmare to get up in the morning and just snap at everyone.