I tried to respond to Dad's comment in a comment, but I was writing WAAAAY too much.
Yes, I do get tiny little damages here and there every few days. And about once a week I get genuinely freaked out. It's part of the job and I can't complain because my head teacher takes brutal beatings and will stand up to a kid being a punk everytime. She's my hero. She doesn't quit, back down, or lose her in-control tone of voice or posture. She doesn't "pick her battles" when it comes to aggressive behaviors. Getting out of the way is good, but not good enough. I really admire her. And good things have come out of working with this kid's aggressions.
I can block and get across the room smooth as silk and FAST! I can wait until the last second to snatch something away or grab a hand on it's way to somebody's face! And I have a seceret thrill when I break out my smoothest move. I feel like a ninja. And at the end of the day, isn't that what everyone wants? To feel like a ninja? Yeah...I thought so.