So this substitute teacher is coaching some dodgeball, and by the time the cops show up, a ten year old is on his way to the hospital with neck and back pain.

Was it a result of a sports injury? Nope.  Apparently the juvenile threw a punch at the sub after some heckling and the sub turned it in on him, locking him in a chokehold and dragging him away from the game.  No idea what the kid's story is, but he's going to have a hard time explaining a sub's motivation to manhandle him.  At least dodgeball is a team sport, so there will be witnesses.  The sub claims the kid threw a punch at him, and I hope that's what the investigation will say, too.

I really think that more and more kids today seem to be acting up and have little to no respect for authority figures.  In my world, you have to remember that if you are going to try to hit a man, you'd better be prepared to get hit LIKE a man.  He's fortunate that this sub was nearly sixty and is from a generation that managed to discipline it's children without destroying them.  Who knows?  A younger sub might have returned the attack in kind.

Now, do I think that getting rough-housed is going to change this kid's attitude?  Of course not.  But there is a good chance that something will...his friends pointing out he got his ass whipped by an old man!