When I was in high school (45 years ago) band practice and some athletic teams had practice starting around six thirty - seven o’clock. But now a days I have heard the don’t even have music classes or athletics anymore.
I went to a large union high school for a while. Split classes. 2 different start times. I had to be on the bus at 6:00am. It wasn’t fun but it didn’t hurt me. It’s actually a good thing to discipline yourself to get up early.