I never understand the schedule for schools: 1. elementary school starts at 7:30AM, middle school at 8:20, high school at 9:10 here. So, the youngest kid gets up at 6:50AM, older ones at 7:50AM, oldest at 8:40(assuming you're not too far from school that is). why the youngest ended up getting up the earliest puzzles me. 2. School is off in hot summer and cold winter, I would prefer they study on campus then, so they…
I think there's been quite a few studies indicating that teenagers benefit the most from later start times due to the shift in their internal clock. Little kids can deal with earlier start times.
Staggered start is frequently due to logistics; they don't want to pay for a larger fleet of school buses and drivers to facilitate the schools starting at the same time.