Ah, the seventh grade Health project. *happy nostalgia* I did AS too, actually. It was about a year after I'd been diagnosed, and I wanted the excuse to read up more on it. I even got to read all the information my middle school brought in to deal with me since my school library had a grand total of 0 books on AS at the time.
Good sources... well, I like the OASIS handbook, and Tony Attwood is supposed to be good. Try reading them. What else do you want to know? If you compiled a list of questions, I'm sure several people here would answer them, and then you could have an actual survey of people with AS to stick on your poster. I'm sure that would definitely net you some bonus points.
_________________
cogito, ergo sum.
non cogitas, ergo non es.