[elpadre]

“..but that other 15%. They were constantly disruptive. ..”

and there lies the problem. The teacher spends most of the time dealing with the disruptive ones and the other 85% get short changed.

[hanamizu]

““..but that other 15%. They were constantly disruptive. ..”and there lies the problem.

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As a retired teacher, I can confirm this. Even two disruptive kids can pretty much cripple the education of their classmates; as you say the teacher spends most of his/her time dealing with them. Sit them on opposite sides of the classroom and enjoy the days they are absent.

But four or five? Learning becomes impossible. Every single minute of class is devoted to trying to control the disrupters. Only the most strong-willed students will be able to learn in such an environment, because as chaos becomes the norm, even the good kids will stop caring and start following the chaos.