My ds was required to write an apology essay for being disrespectful in correcting his teacher in a similar situation. One of the things he had to write about is how he would change himself so something like that wouldn't happen again. He wrote about how hard it is having ADHD. He said he wasn't sure he could change himself in time to make sure it wouldn't happen again since he's been working on it for so long. He talked about how hard he tries, how bad he feels when he fails, and how he doesn't always understand why people get upset with him. I've never seen him write something so heart-felt, and it almost made me cry. I'm hoping it helped the teacher see that he's not just some smart-alecky kid but one who really struggles (and also, maybe the apology letter punishment was a little extreme).