I have never met a Regular Ed teacher who "gets" it. That's why we put son in Special Education. They were at least willing to listen. I always did see the teacher's point of view, even if I didn't always agree with the teachers. They have 25 kids. They have two or three who can't function in class like other kids. They do modifications, but it looks like a deliberate sloughing off to them compared to the other kids. The special needs child also knows he is different and he feels badly.
In my experience, my son didn't learn to socialize at recess. He pretty much played alone. He needed text-book-taught social skills classes in order to learn how to appropriately interact with other kids. However, I don't feel it's appropriate to keep any kid from recess. All of them need a break from a long day, and they also need the exercise.