I know there are a lot of schools that try to shove the special needs kids off to other schools. We took one in, a 4th grade girl, and while it's been quite a rollercoaster ride, the successes that we have had have been tremendous.
This 4th grader has a learning disability and, when the going gets rough or she doesn't like something, she will shut-down and throw a tantrum. However, despite her problems (an a reading and speaking deficit), she gave an awesome oral presentation on a dinosaur! Albeit, she had to have a little help reading, but she got up there more confident than the kids who didn't have those needs or problems.
It's sad that teachers don't have the time or resources to work with these amazing children. I'm a blessed to be at a small private school where I can see these kids work with mainstream kids. It was like she was just one of the regular kids. The other kids clapped and cheered and even asked her questions about her report! My younger elementary kids were even intrigued and gave her their undivided attention.
Don't give up on these kids! They will surprise you in many ways if they are just given the opportunity to shine!