Update: He brought the book he wrote and read it to the teachers, they shared it with the class (it was on the topic they are covering). You could see how he felt proud, connected and understood. It was very sweet of them. I had suspected that they had a conversation after the awkward conversation. I need to remember that eventhough we have known him 3 years, his needs are new to them. They are definitely trying and I think they believe that he can read now, because before they looked at me with disbelieving eyes, of course. There is hope!