There are some folks doing some great work in disability understanding and awareness, disability activism, and the study of disability history and culture. More and more universities offer disability studies, much as they would offer womens studies and gay studies. Now I think this should be so at EVERY university and that if a university isn't offering it, they're pretty lacking.
On of my favorite groups I've discovered more recently is The Disability Awareness Institute at Understanding Our Differences. They work with parents to provide education to the students in many communities, including Newton.
Like I said, children should learn about the disability rights movement, just as they do the womens rights movement, the civil rights movement for African Americans, and the gay rights movement. The Disability Rights and Independent Living Movement - University of California, Berkeley website is a great resource!