The teachers report that he is somewhat immature but overall doing well, is helpful, is organized (he was selected as section leader in the 8th grade band, hah!), is polite, etc.
This, to me, is a rather large strike against ODD and ADHD, in my opinion. One of the diagnostic criteria is that the symptoms happen in multiple areas, including home and school. If he isn't showing any symptoms in school I'd personally be looking in another direction - autism spectrum or a sensory problem. Kids who are getting overwhelming sensory input can sometimes hold it together (especially with the help of a med like Prozac) for a while, but eventually they have to react and let out their emotions.
Has he been seen by a neuropsychologist or developmental pediatrician? If not, that's where I would head next.
