For me middle school (junior high at that time, where I lived) was a time when other kids my age seemed to magically acquire a lot of social grace that I didn't have. It confused me a great deal. I started emulating others at that time, trying to fit in. I had no concept of how to make friends, how to enter a conversation already in progress, what to do with myself on the days when those I normally hung out with weren't around. I would wander the school grounds in a daze at lunch time, sometimes. I finally discovered the library was available, and would escape there to read if those I hung out with weren't around.
I say "those I hung out with" now, but at the time I thought of them as friends. I know now that it wasn't an ordinary friendship. They were just more friendly to me than others were, so I felt comfortable sitting with them during breaks or lunch time, or following them around, standing by while they conversed. I usually didn't say much. But I was with people who were familiar to me. I'm certain they thought I was quite odd, but at least they weren't cruel.
What would have helped? I like to think that knowing I wasn't a freak, or alone in my social awkwardness, would have helped. I grew up in an era when no one I knew had ever heard of high-functioning autism or Asperger's. I had little idea what it was until two months ago, myself.
Maybe it would have helped to have some supervised social get-togethers during school hours. For instance, a class that was all about getting to know each other, to open up, to talk about friendship and what it was.
I think it's funny now, that we had "social studies" -- but that was usually about watching films about other cultures. I needed to learn about MY culture -- how to interact, and the fact that different people have different styles of interaction. As an adult in my thirties I learned about Jung's personality typing -- in the form of Meyers-Briggs and Kiersey testing. It was a revelation -- I could at last understand that I was an introvert, and that was a huge step forward in understanding why I was different.
In my former workplace, for a command strategic planning meeting, we had a facilitator who used MBTI and tested all the participants and provided training in the type indicators. This helped us as a group communicate more effectively with each other. I was in a tiny minority there, an INFP in a group of mostly ESTJs, and the facilitator was careful to point that out and insist that they as a group NEEDED me because I had such a different perspective on the problems we needed to deal with.
It might be less stigmatizing for AS kids to first go that route, teach kids about personality types (which are all considered "normal"), and then to move into specifics like the autism spectrum, social phobia, anxiety, etc.
I also think some simple rules of etiquette -- which can be learned -- are also a beautiful way to learn how to interact with each other peaceably and considerately. At one point in my life I opened up an etiquette book and just started reading. I found that it fascinated me and also provided an eye opener about certain aspects of social interaction that I hadn't thought about before in quite that way.