Actually the school said exactly nothing about this case, as it is a private matter. All the jawing came from the mom and some drone at the local courthouse.
"a custodian at the school reported the boy's comments."
The school folks really can't hide behind that kind of argument anymore. In fact, the Momma probably ought to show up at the school tomorrow morning (after writing out a child endangerment complaint at the nearest station house), along with the cops, and haul these yahoos out of there before they get a chance to mess with more children.
It's literally amazing to watch how fast cops will gravitate to the "other side" of a question once somebody has filed a formal complaint.