Irena, I am happy for you

In my child's PS last year, a parent asked the PTA to arrange an "Abilities Awareness" campaign and event at the school. They organized booths in the library and each parent whose child had a particular condition presented about that condition and how it affects those kids to both the staff and the children. They even made activities in the booth to demonstrate the conditions for kids - for example one was disabilities - the kids were asked to do tasks and pretend that they were blind and then asked how difficult it was. They were then shown how the blind kids did that same task etc. I only read about it in the newsletter as it was an event for the staff and students. But, they said that the event was meant to raise awareness amongst kids and admin and teachers on how a disablity could affect some kids.
Since you are struggling with a lack of awareness and empathy for your son's disablity, I thought that this would be an idea that helps you.