That seems like a really long day. I didn't have a daily homeroom, how many hours of classes are included in that? I would feel awful for any child that gets dropped off at 6am, sits in a cafeteria for an hour, sits through 2 hours of homeroom and then 8 hours of classes.

That's also probably only going to work for highschool aged kids. The reality is that they're probably capable of getting themselves to school if you have to leave early

For teenagers, 10-18 or 11-19 would probably be best, including time allocated for homework.