You'll need to teach him the things he can't intuit on his own, I guess. Also: I wouldn't even discuss the teacher "reports" with your DS at this point, if they are so off-base.
I wouldn't discuss negative teacher comments with DS, but I would use them as information about things he doesn't "get," and I'd make sure to teach him how to deal with those situations, so that he conforms more to social norms over time.
By middle school, many teachers are far less tolerant of kids who have a different operating system: they expect compliance and a basic understanding of the social norms of school. Workplaces are generally more rigid still.
I wouldn't waste energy being worked up-- I'd treat it all as information about where DS differs from what's expected, and make choices about where the situation can be conformed to his needs (as in, subject matter taught should be appropriate) and where he should learn to conform to the situation.
