DS, 8.5, 2nd grader, gets about 10 hours a night. He's up at 6 am like clockwork, has his entire life, so we try to get him in bed by 8. Once or twice a week it's later, due to sports practices.
DS/DD, 5.5, Kindergartners, get 10.5-11, depending on if they sleep in (which for them is 6:30...