Having a daughter with a disability, I can't agree more. We need to get on their level + stop expecting so much. Everyone is different, everyone has a unique learning style. Use what works for the individual, not for YOU.
Often times the bullies and the kids who act out are so deprived of positive attention and reinforcement they will do anything for any type of attention. It takes a special teacher to get to the heart of these kids and make a difference in their lives.