I was wandering around used book stores and ended up buying a book called “The Promise of Wisdom” by J.Glenn Gray. I’m not sure if its any good. I’ll ask the teachers if any of them has read it. Here’s a quote from the title page of part 3 “Philosophical Problems of Practice”.
“The genuine teacher is only superior to the students in that he has far more to learn than they, namely to let learning occur. The teacher must be capable of being more teachable than his students. The teacher is far less sure of his task than the students are of theirs. Hence in the relationship of teacher and learner, if this relationship is a genuine one, it is never a question of the authority of the great knower or the dominating influence of the instructor. Therefore it is a great thing to become a teacher, something quite different than to be a famous professor.” – Martin Heidegger
The book uses words like “mankind” and the “free man” and as above you can notice that for some reason the teacher is “he”, so its a bit old school but I think theres some good info in there.