Calm down, I know. I won't justify what I didn't say. You know as well as I do that many kids who can't do the work don't want trouble and don't want to draw attention to their shortcomings. If you want to assume that I give kids work that they have no chance of understanding and turn a blind eye when they give up and cheat, it's up to you. I was, as you well know, opposing your assumption that less able students disrupt. If I have pushed a student too far out of their comfort zone, I'll adjust the task and help them I certainly don't assume that a noisy or rude student is dim or that a quiet one is absorbed in their work. Your argument seemed to rest on the premise that there is a correlation between low intellect and unacceptable behaviour.