I didn't make that generalization - I was commenting on the sweeping generalization that was made in the movie. I know some very great teachers who do not teach at IITs. My parents are college professors and at least 4 aunts/uncles of mine are also in teaching profession. While I agree that a lot of educational institutes in India suffer from under-qualified or uninspired teaching - I do not believe that it is the core reason of all that is wrong with the education system. My being an IITian actually contributes less to this belief of mine than my school teachers in a small town. It did get reinforced here but I have always had some great teachers.