Yes, in almost all IITs course feedback system is implemented. Here at IIT-M , it's popularly known as TCF. For a certain physics course, our instructor was not upto the mark and hence we filled the TCF accordingly, I dont know if he/she has been questioned, but we did get a better instructor this semester,for yet another physics course.u00a0 TCF is an open way to vent out anger, by shading the omr bubbles in a certain form to resemble written text( I lost the picture), and thus trolling the course.