I think the main point is the school has to be vigilant and if they see that someone is bringing others down they have to try to work with him and if he refuses to improve, well then he doesn’t belong in that school should be transferred.
I can agree with that, depending on what you mean “bringing others down” (if he is a Madiach, of course he should be removed. If he is telling them they don’t have to wear a straimel, not so fast).
If parents found out that hypothetically the school wont do anything about kids who are negatively influencing their children and their childrens friends they will take their kids out of that school.
And Chazer is cheaper (I know that is harsh; it depends on what you are getting at).