I just realized something:
Okay people, in order to avoid future confusion, despite being western in setting, the classrooms are still divided by grade and there are permanent classrooms that you are assigned to: St. Dymphna's employs a segregation/tracking system that mixes guy and girls with lower averages with a balance of guys with higher averages. There are no electives, classes follow a schedule.
It's unimportant to the overall play, but it's a supplement for any actions you'll take.