@silentfx
When you consider that they essentially alienated and chased away the one being that can effectively control roughly 50% of all gender-based beings...
How can you expect them to actually have a chance?
There would've been ways to prevent him from using that power on classmates, although they would've been somewhat uncomfortable or annoying before he would prove them necessary if he ever gets caught for doing it.
Or they could've just focused on the potential of the power.
Or they could've been thorough about it and killed him.
Halfassing situations like that by turning a potential ally into an enemy and then doing nothing else is idiotic.