My pupil - JJ

I have taught JJ for 2 years.
I heard stories about him from the moment I knew I was to teach him. He was a rather "difficult" child. When he was in the lower primary, he refused to attend lessons, walked out of the hall if the talk was too boring for him, dozed off in class and even tried to jump from the second floor!
I remembered on the very first day of sch, he slept through my lesson. Unlike other kids, he was unable to focus and concentrate. He would walked around in the classroom, doing things he liked. At first, I would tried to make him sit down. As time passes, I realised that it was not his fault, he just could not comprehend and understand what he did was wrong. What made things worse was that kids would teased him and said he was crazy. Whenever JJ was teased, he would not have much response except to tell his classmates that he is not sick! However, if one is to attack him physically, he would fight back. There was once it took three male teachers to nail him down!
After half a yr of observation, I sent him to the EP. He was then diagnosed with ADHD and dyslexia. I finally know why he was such a "difficult" child. It is very difficult for a child with ADHD to study. With an ADHD and dyslexic child, it is almost impossible ( especially when the teacher has other 30 pupils to account for).
Knowing his condition, somehow makes his life easier for him. Instead of emphasing on his studies, I tried to build up his self esteem, by asking him to help me, by praising him in front of the whole class. I explained to the others that he is not crazy and stopped kids from teasing him. After a while, I see the change in JJ. His behaviour has improved tremendously and he listens to my instructions (though at times, nothing I said seems to work). But sad to say, academically, he did not learn much from me. Listening and oral skills, maybe, but not written work .
At times, I feel bad, cos I think more can be done for him.