When you force high school kids to work days that are significantly longer than a normal adult to achieve a good GPA and get into a good college, you can expect that they are going to throttle back once they're away from home with way more free time than is normal. From my kid's experience: she was up at 6:30am, in AP classes by 7:30am (three more to go during the day). Classes were done by 3:00, then sports practice…
This schedule is no different than my schedule from 30 years ago and I don't consider it problematic at all. You frame it as 15+ hour days by including all aspects of their day as "work" but no normal adult includes their workout time and their social engagements as part of their work day. Time spent in sports is fun, not work. If it is work, then quit. Time spent in gym class and lunch is not work. Remove all that b…
It is fun when it is fun, when you can skip it or do it purely because you want to. If you go to sports club because you have to, it is work and not fun.
If you go volunteer or have to join the club for college application, they become work. They are not fun stuff.
> Time spent in gym class and lunch is not work
Gym class is work. Kids are not there voluntarily.