First of all, I agree with the previous posts that if this is the language you are using now to describe children, you should check out another job path. All children are precious and deserve our respect, and just by the words you are using shows that you don't respect all children, only the ones you personally think are "easy to manage."
Secondly, if you are asking if Montessori schools are specifically for children with disabilities, that is incorrect. Unfortunately, this is a common misconception in America. Montessori schools are for all children. I have seen a child with autism flourish in my room, and I have also seen children whose parents were scared they would be 'bored' be challenged every day. It is a wonderful community, if done right (meaning that it follows philosophy well), and all children are welcomed. (Another unfortunate part of Montessori is that it was started with the poorest of the poor children and in America it is most commonly associated with the richest. This needs to change.)
I am a certified Montessori teacher.