yes he does have slow processing speed, similar to what you described for your son. He is seeing a pediatrition and psychologist but we are 5 weeks into the school year (we are in Australia) and our son still isnt back to school due to his anxiety. We just dont seem to be making any progress.
katdarin -
I have seen postings with adderall/dexedrine where some children have become angry and agressive while taking them. I have heard that it may be too much (you say 1 tab - what mg?), or perhaps there is an underlying problem that has gone unnoticed. Did you get your diagnosis from a family doc or a psychiatrist? That makes a difference - MDs typically have a minimum of experience with ADHD and can only help mainstream problems and doubtful they know slow learning disorders.
I can say as an adult with ADHD I found that dexedrine made me more passive and friendly not aggressive but as I mentioned some children taking it have seen the opposite. I'd record all you've seen and heard from others and bring it in with you. It's not good to allow this to go on. You may want to phone ahead and ask that you get your child to drop taking it until you find out what is going on.
Best of luck to you.