News that Professor Lupin was a werewolf caused a modest stir at Hogwarts, giving the students plenty of gossip for a while. Until... a week later, Hogwarts' gossipmongers paid the price for it.
After Professor Lupin resigned as Defence Against the Dark Arts Professor, the students were astonished to discover that the school had not hired another professor to replace him. Instead, it had simply cancelled Defense Against the Dark Arts.
That was right. Defense Against the Dark Arts had been temporarily cancelled by the school.
The reason was that Dumbledore had been unable to find a Defence Against the Dark Arts Professor for the time being, and no one was willing to fill in and teach the students.
This immediately spelled disaster for Hogwarts students facing their Final Exams, especially those about to take their O.W.L.s and N.E.W.T.s.
Professor Lupin had not even had time to tell everyone what to focus on for the exams, much less which questions he thought were most likely to appear, before he resigned and left.
Defense Against the Dark Arts had already been bad enough. This directly left fifth year and seventh year students dumbfounded.
As a result, the Defence Association, the only thing even remotely connected to Defense Against the Dark Arts and supposedly there to tutor fifth year students, became even more popular.
Some students with an especially strong survival instinct even boldly suggested that Albert teach everyone Defense Against the Dark Arts. Most absurdly, Professor McGonagall actually summoned Albert to ask for his opinion.
Anyone else naturally would not have been qualified, but geniuses like Albert were exceptions. Isobel, the genius beauty about to graduate, received similar treatment.
Neither of them agreed to teach the students, but they were willing to use the Defence Against the Dark Arts classroom during