All the teachers and staff are parts Capaldi has played. He is also part of the staff too, perhaps the Principal?
This school is open to all genders, all ages, all backgrounds, everybody. You could be learning from the great Malcolm in Business and such and be learning Bible from the Cardinal. You could learn Psychology from the Doctor. Randall Brown is an English teacher. Pilfrey is one of the school sick bay attendants. Frobisher at reception.