Classrooms are randomly assigned in Japanese high schools for everyone except class reps, who at teacher request may be held in their room from year to year. You step up to the bulletin board on the first floor to find your class.
(Everyone roll 1d6 to find your class. 1=A, 2=B, 3=C, 4=D, 5=E. If you roll a six, you got lucky! Your name wasn’t on the board due to a clerical error. When you go to the faculty office, they tell you that you can choose any of the classes. This happens after all other students have learned which class they are in.)
e: Comment on this post with your roll. (If you roll a 6, wait until everyone else has determined what class they are in to decide what class you are in.)