I really don't think it has anything to do with the hours. Children/teenagers will try to get away with as much as they can. It's more about being rebellious. My elementary, high school, and middle school all started at different times (and my senior year of high school started much later because I completed enough credits). Regardless of how late school started, I would just stay up later, the later school started.…
"Research to date has shown that the circadian rhythms of adolescents are simply fundamentally different from those of adults and children," "All of the studies of adolescent sleep patterns in the United States are showing that the time at which teens generally fall asleep is biologically determined -- but the time at which they wake up is socially determined," https://www.sciencedaily.com/releases/2018/12/1812121407…
Should we abolish timezones and daylight savings as to not interfere with the immutable teenage sleeping patterns?