Ive never had that kind of experience in terms of blatent assault from an instructor. However I have been mugged once or twice!

When I used to do kickboxing with friends back in the school days, the instructor allowed us to fight senior grades who were much older, more experienced. They only thing that taught me was how to get a beating and you dont learn anything from that.

You dont really hear of these stories much anymore though I have to say. Its becoming much more of a professional industry and you need police checks etc.

Interesting story though. I hope the student got his own back!