We have had two children go through this. One managed/manages it, but would enjoy life more if it wasn't a requirement. The other is just not coping with school starting at 7:30.
There is reasonable scientific evidence that these hours are not beneficial for children, particularly as they approach puberty. And frankly it'd just be a lot less stress on parents.
Thanks for your consideration.
Cross-posted from Dreamwidth, at http://drwex.dreamwidth.org/950721.html. Please comment there; this journal is winding down.