From what I've gathered pink, youngsters with conditions like autism and adhd can be given extra time to complete any exams, but my own son probably won't be able to take any. I've explained this to him, in case he feels "different" when the time comes, but just add that we're very proud of what he does. We are - every small step is a huge one for him.
Thank you cazzaz. I've found so far, that some of our worries are unfounded, so I hope that you can relax a little about your own son. He may never go at the pace of others, but he'll do things in his own good time.