My children (ages 12, 7, 6, & 3) go to bed at 9:00pm everynight. School day or weekday. Even in the summertime. It's pretty mush just routine now. The only one I have problems with is my 3 year old. Sometimes she'll keep getting up and coming to my door to ask a bunch of questions. Or she'll call me and ask me a question about the next day, or ask me to tuck her in, again.