I'm part of a Youth Mentoring Program where we work with 'problem' students within the schools.
This is really tough on the remainder of the kids who genuinely try to learn.
Hopefully a somewhat different culture exists in private schools.
I work in a private school in Australia, but have worked in the public system in London for a few years on and off.
'The remainder of the kids' is the great tragedy here. Excellent classroom management and good professional development training should not allow the education of the majority to be taken away by the minority. Its just too important. How the teacher responds a) gives a lesson to the rest of the class in emotional intelligence, b) can diffuse or blow up a situation.
Keep your voice down, your instructions clear, don't belittle the kid publicly, always treat the kid with respect and teachers will find that this is the most effective way of ensuring that everyone gets their education.
I shudder to think that one of those good kids will sit around the kitchen table at 6pm and say, 'Mr Brad spent all lesson telling off Danny'. Not in my classroom!
In my experience, parents need to be much more involved with their students schooling. Sometimes, they will stand up for their kids no matter what, sometimes they need an ally because they have no idea what to do.
Interesting how quickly discussions of learning can get into welfare so quickly... Getting kids engaged and seeing worth in knowledge, learning, and connecting it to life chances is a real challenge in this environment.
Brad