Nevertheless, I would still on occasion go to bed at 10:30 (had to get up at 6:30) and lie awake in bed till 01:00-02:00am.
I was always forced to get up early, which of course resulted in me being extremely tired during the day, which negatively impacted upon my life (academically, relationships etc).
Seems like there has to be a better way.
It's dark in the morning too, maybe going to school before dawn is the major problem, given that the schools are closed in the summer.
I've heard of doctors prescribing melatonine, which is absurd when the problem basically is cultural.
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.
It's not as easy as "just go to bed earlier."
Whenever someone tells me they have a hard time going to sleep, my first question is always to ask if they exercise. I rarely stayed up past 10pm, much less past midnight as a teenager because my friends and I were getting up early to surf, ski, skate, play football, basketball, baseball, etc... By the time 10pm rolled around I was dead tired and ready to sleep. And on days I had to work after school, I got home around 10 and would literally pass out.
I know the environment is different, but my experiences make me cautious to say 'all teenagers' have different rhythms or want to stay up all night because of something biological.
Then I would head over to theatre which gave to more hours of backstage construction work.
Despite all that 'exercise', I still stayed up till 1am at a minimum, and sometimes didn't fall asleep till 3am.
So anecdotally, what worked for you, didn't work for me as a teenager.
Teenagers are near their peak physical capability, yet most get very little physical activity.