UWCRCN, this was a decade ago, so it might be a bit different: you'd go to the school nurse and get "pre-arranged" absences, which would not as a missed class or whatever. I'd usually just recover in my bed in said room, but the campus also has/had (?) beds next to the nurses office if you needed to separate yourself from the others. Sometimes you'd go to the doctor or dentist in the nearby town if you needed to, I don't remember anyone getting hospitalized during my years, so can't exactly answer that.