@Gummy1295You seem to have missed a crucial detail in your last post. Reiko and Aria never left the Great Hall, it means that they couldn't be at the faculty office by any means. I told you to be careful to not control other people's characters once, I believe so.
Also, this is for everyone, since you all seem to be under the misconception that the school is kind of a backwater trap hole. The buildings is obviously well signaled, like any big, public building should be, as well as being adapted to the possibility of people with unusual anatomies, meaning that there are elevators and ramps, for people who can't use stairs.
In other words, you won't be blocked from going anywhere within the Academy premises, or lost as long as you don't do something exceptionally thoughtless.