Though it’s just my opinion, I think that creating an appropriate training environment is also the teacher’s duty. The aristocrats are certainly bad, but the old-man who ignored them and looked down on them is bad as well. He didn’t just have to guide his students, he also had to watch their back while they were still inexperienced. That applies even more when there are only a few of them.
As a former teacher, it should be alright for me to make a sermon or two, right?