When I ask b&m school children what their social experiences are like, they typically state they get to socialize the 15 mins or so before school starts, about 10 mins or so during lunch after everyone has eaten, then in PE or recess. I counted it up to total about 1.5 hrs a day. DS gets WAY more "socialization" than that.
I would distinguish between "socialization" (coming to understand and follow social norms) and "socializing" (fun times with friends).
Most kids with social skills difficulties have problems with the former as well as the latter, and a supportive school environment with appropriate academics can be helpful in this regard.
