How do most high school locker rooms/ showers work?
The general idea is for you to put all your stuff in the locker except your towel, soap and shampoo which you bring to the shower with you. You take the towel off and shower with no boxers on. When you’re done you put the towel back on and go back to your locker where you just take off the towel, dry off, and put your clothes on. It’s been a while since I’ve been in high school and what you’re describing doesn’t sound quite normal to me, if everyone is acting like you’ve described I think they’re afraid of being seen naked by the other students. However, if everyone’s doing it that way, you probably won’t be in the wrong to do it as well.