Wizard Conduct was a course designed to shape students' thinking.
From the moment it was introduced, it had been compulsory. Even the final grade was an important factor in determining whether students could enter the Ministry of Magic after graduation.
As such, the professor teaching Wizard Conduct had to meet exceptionally strict standards in both teaching ability and moral character.
Shawn and Dumbledore had put a great deal of thought into selecting the professor for the course.
They had spent a long time poring over the England Native Wizard Register.
In the end, Lupin-a werewolf wizard who had remained kind despite a difficult childhood-was a candidate both Shawn and Dumbledore were very happy with.
Half a year had passed, and Lupin had not disappointed either of them.
The atmosphere at Hogwarts had improved even further.
It was not as though everyone had become utterly kind and eager to better themselves, but the occasional bullying and supposedly harmless pranks really had disappeared completely.
The many less visible benefits could not be summed up in a sentence or two.
As for why Grindelwald had come into conflict with Lupin, the reason was quite simple.
Grindelwald viewed Hogwarts entirely as Shawn's private military academy, so naturally, he believed these young wizards should be trained as soldiers in reserve.
He wanted every one of them to adopt an uncompromising attitude and forge a will of steel. Above all, their thinking had to be completely loyal to Shawn, with no room for deviation.
Lupin's teaching was much gentler by comparison, gradually nurturing the goodness and resilience within the young wizards.
And so, conflict between the two arose naturally.
The other professors at the school had also split over the two approaches to teaching.
Professors such as McGonagall and Flitwick supported Lupin's existing methods.
Moody, Snape,