In my opinion the best way to learn is by questioning everything, even the material the teacher is giving the student to examine. The teacher already examined it, and on a larger scale there's nothing to learn if the teacher already knows the answers, while the student may come up with different questions that haven't been answered yet, not even by the teacher himself, on both occasions.
To further the subject, I think in essence the student and teacher are the same kind of person. Only one knows the questions and their answers (teacher) and the other explores possibilities to more questions and their answers (student). Both learn if the latter explores its views.
and, in most studies, there's no end to the possible gathering of information one can achieve; in that viewpoint, both teacher and student are students. Unless you're bound to a strict set of rules that only politics or religion can outline.
