It is, but you must first pick a girl, to do that you must solve her problems, talk to snape then you appoint them to a new position of Commisar of IMVOIS, then you can go out at night and pick them. If you accidentally talk to Sally about the meetings before picking your girl, you can no longer pick the girl which means you can't see the prefects meeting (it makes no sense, obviously).Why are you 2 refusing to tell us how to get to the meeting of the perfects? That part is still in the game right?
The reason I avoided explaining it is due to complexity, you don't get to see anything additional out of it either. It ends at the same place. Rather than going through all that, since it will change and I think it's borked, I just avoided it