Did you try going to sleep earlier? Who said you couldn't have 9.5 hours of sleep?
The other thing you probably would have benefitted from is an afternoon nap (if you were unwilling to go to bed a 9pm).
To blame others (those evil 55 year old early risers) is to deflect your own accountability.
By the way, I was an early riser in high-schools and I preferred to get out at 3:30 rather than 5. Im sure teachers would prefer to be out earlier to be with their families (or to run extracurriculars). There is no solution that fits everyone so adjustments need to be made by eveybody.