[watwut]

I had friends who went to school in nearby city - meaning they had to wake up 5:45 to catch the bus every day. Their sleeping schedule changed after few weeks - they went to sleep sooner then me every day and it became "new normal" for them.

Likely, if the school and whole world moved every activity an hour up, you would lie awake till 02:00-03:00.

It is same with adults and same with little kids. When you wake them up regularly determines when they will need to sleep.

People with sleep problems have sleep problems no matter flexible schedule or what.