"It is interesting to wonder about the use of what we generally inappropriately call “master class” and that I would rather call here “public class”.
In the first idea of the “master class”, the pedagogical level of the “master” does not seem to be the first worry; but rather the mastery of his art, even his charisma. It is important to underline here the huge gap between weekly teaching and the public class."
Claude Delangle