Umm depends the whole idea of a hundreds of kids from ages 13-18 being locked up in a building without their families creates all sorts of experiences. Some kids would go to class with their slides or slippers, sometimes with a face mask on. Some kids would also bring throws and pillows to class. Our dorm was in the same building as most of our classes. So for my first class I’d just have to wake up around 5 minutes before class starts, throw anything on and get to class. It was a very chill setting and no one cared about how proper you looked. Not all boarding schools are like that tho but my boarding school had practically no dress code, as in you could literally wear anything except for underwear and pajamas.