This Halloween, ABC did a little bit of coverage of the New York Jedi Academy. They interviewed a few people involved in the teaching and learning at the Academy, and they included some really authentic-looking combat sequences between Academy "pupils." One of the interviewees made a good point, though: they do make sure that no one gets hurt, because it's all for fun and not real combat.
Link:
http://abcnews.go.com/Video/playerIndex?id=3802220