It went the other way for me. Got the ADD diagnosis and put me into classes with kids with downs syndrome and other profound disabilities. Let me tell you, that isn't great for your social life. I ended up leaving as soon as I was legally allowed and got a job.

This supposed ADD disappeared once I got into the real world and was given actual problems to solve. I think they did it mostly to keep their test scores up. I have no faith in the education system as a result.