I had a, friend, not sure it can be really quite be defined as that because it is particularly difficult to have be friends with aspergers/autism.
They guy was in my class from Yr7, right the way through to Yr13. He was, an interesting character to say the least. We were in an all boys school up to yr 11, and when we hit yr 12 and the girls joined, he refused to talk to them... It says a lot. Generally speaking I saw him approve quite a bit from the younger years to the older years.
To put it simply, Autism boils down to a difficulty to socialise properly, or to understand how social interaction works. Thinking about it, I'd say Sheldon in the Big Bang Theory has some form of Autism.
The thing I really want to put across though, is the one thing that we learnt when we were at school. It worked best treating the guy exactly the same as you would everyone else. He adapted pretty well to be honest, and did progress pretty well.
kd