Certainly, disruptive children can destroy the classroom experience for the others.
Some states, like Delaware, have given teachers and school administrators new powers to discipline disruptive children.
Seriously disruptive or violent children should not be shunted from one school to another.
Preventing a young and disruptive child from playing, but allowing him/her to watch the others at play, may also do the trick.
That may be special needs, it could even be schools designed to deal with disruptive children.
I don't see how a grammar school system could help deal with disruptive children.
One disruptive child could make a hundred students seem like a thousand.
He took the 20 most disruptive children from all three grades and moved them to a satellite classroom in a nearby church.
For example, it could be an extra disruptive child or two in a classroom.
She said there were "two or three" disruptive children at any one time in "most" English classrooms.