Why Start School Later?

I think that starting the school day later would greatly benefit the students and teachers. if we started school at about say nine thirty in the morning instead of eight thirty or earlier, that would mean that most students wouldn't need to be awake in the morning till almost seven thirty to eight thirty and some kids could even wake up a little later then that depending on where they live. granite it is proven that high school students only need six to eight hours of sleep each night but there is always that few that never get the six to eight hours of sleep.
if jimmy has good grades it makes him look good and the school will look good. so there for i do believe that a later day start would great for everyone. Also i think it would benefit the teachers because then they would have more time to get stuff done and maybe it'd actually allow them to teach better which would also allow the students to learn better and again earn better grades on class work, homework, and test. but however by doing that and getting out a hour later or possibly more then that it will also give teens and kids less time outside during the day when the sun is up to get something's done and pretty much students and teachers would be living in the dark because you'd always be in school during the day. but still for better grades and more