S.,
You have my sympathy! I am a teacher and a mother so I can relate to both sides of this. First, remember that you have to be your child's advocate. Only you know what your child is truly like, and if what is being done at school has a negative effect on him, you must make this known. That said, schools generally don't recommend putting a child in a self-conatined classroom unless it is truly a last resort. First, it is much more expensive for the school system to do this, so they try to avoid it at all costs (we know how important money can be to the schools!). Second, by law, a child must be placed in the "least restrictive environment", so schools are very slow to place in self-contained rooms because it is very hard to prove that it is necessary. So if the schools think they can prove that it's the best place for your son, they probably have a bit of testing and anecdotal evidence for it. All of this only applies to public schools, however-- if your child is in a private or charter school, the rules can be different. If I were you, I'd ask to see any test results and any other evidence they have (often notes or journals from teachers) and remember that self-containing is not usually a bad thing. I've had students over the years who were mostly self-contained or were transitioning out of self-contained, and they really, really loved being in "their" room, as opposed to the regular classroom. It can be a huge relief to a child who has had discipline problems to finally be in a "safe" place, where they can relax a little, learn good behavior in a non-threatening environment, and not let their behavior (and its consequences) get in the way of their actual learning, which is why they're in school in the first place. Good luck with this!