I don't think it's impossible that this story is true, nor do I think it's a prank, but I wonder if the original author were pressed for identifying details if they would claim it was an amalgamation of different cases crafted into one "cautionary tale".
http://www.freerangekids.com/boy-11-plays-basketball-in-own-...
And given the steady stream of well-documented, actual and equally ridiculous cases like this on Free Range Kids, I doubt this is a prank.