why must he interact only with others with ASD? I find I have no more in common in general with individual autistic folks than I do with the general population. He is likely to find social activity by joining interest groups and looking for those who are new to the group too. There are lots of special interest groups on campus and likely more groups off campus in the community around the college. He can look for others who enjoy the same things he does, and if he is in a larger urban area he is likely to find autism support groups nearby off campus, if that is the sort of social group he craves. Getting active in whatever interests please him the most (movies, art, stage, model trains, photography, hiking, politics, nature study and conservation, astronomy, astrology, music, camping, computers, cars, fishing, role playing games, you name it) he is very likely to find others who share interests and enthusiasm and make connections through shared interest activities.