Just wondering how things go in that setting. It seems to me the school administration must know about the Bus, since otherwise they would probably be bothered by one teacher taking so many excursions in one year (and I doubt whether that could be concealed given that they would notice a bus and a class missing). On the other hand, if that were the case, I would expect them to demand that she take other classes on magical excursions as well, which from what I've heard is implied not to be the case. As for who else (if anyone) knows, I have no idea.
P.S. I've only read one or two of the books, and that was years ago.
edited 12th Feb '10 10:44:26 PM by kuyanJ