We don't even know if the school had the wrong address. We don't even know if the child misunderstood the vice-principal. All we know is that the child thought he was told to walk home - and he hadn't been prepared for that eventuality. And, IMO, 5 years is too young to be forced to make an independent act.
Probably :) I think I picked out a random message to hit reply to.
If the article is accurate (I know we are talking about reports here) then we do know that the school had the wrong address. The mother said so.