Mostly teacher creates the problems, not students. If teacher is wise enough to balance the dynamics of class, I don't expect any problem. The biggest problem creator is generally the EGO of the teacher. Especially young and newly appointed teachers may face this problem since they recently transferred from the set of student to the set of teachers.
Thanks for this kind response. I do agree that the teacher is responsible for the inadequate classroom discipline, but environment, class atmosphere and ST rapport are considerable reasons
I am not sure that they are the reasons or the result. This is not a one way linear system at all. In my opinion, the leverage point is the quality of teacher.