Our school district just spent the last year trying to convince parents we should shuffle around start times to make high school later and elementary school earlier. It was a complete clusterfuck. Both teacher and parents alike at both the elementary and the high schools all had a million reasons why it couldn’t possibly work. Since there are a limited number of buses which are shared, you can’t move one start time w…
My campus had a rolling start of day, depending on the university that's attended. I don't know when it was enacted but it certainly helped with congestion in the transports in the morning and in the cafeteria for lunch. Students are autonomous though. I can imagine that school pupils are not and they cause troubles for parents.
We could have made school children autonomous far sooner if we wanted to.