Will probably screw up things for parents but maybe secondary schools should start at 10:00 and end at 16:00-17:00 instead of the current system where school starts at 8:30-9:00 but finishes at 15:00-15:30? So you'd still be in school for the same amount of time except school would start and finish later. Heard that it's apparently better for the kids (as in they'll be more productive).
Yeah found the principle of leaving home at 7:00 to arrive for 8:30 dead (don't ask me why I had to do that or why I couldn't simply have gone to a closer sixth form).
Edit: wouldn't mind leaving the house at 7:00 if it meant that I had to be in school for 7:30 though but for 8:30? Yeah no, don't like the principle.
Overall though think that starting at 9:00 am is fine (school from 8:00-16:00 would be the max school time that I'd be willing to do, anything more than that is too long).