We had a game called "Free-for-all Rugby. It was similar to soccer, but the coaches tossed in as many as ten balls at once. Our PE class (maybe 50 boys), followed the basic rules of rugby, but the main goal was to kick as many goals as we could, and this often resulted in some pretty painful injuries (one kid even broke his arm). Not a lawsuit to be seen.
I would not be surprised to see Chess be our number one sports interest in schools in the future. That being said, I figure someone would bruise his/her hand on the clock and sue the shit out of somebody.\