[@KatherinWinter]
	This school is to teach them to blend in to the real world, the human world. For multiple reasons, so they must learn to maintain a human appearance where it's more safe to do so, and learn to keep the fact they aren't humans a secret. Otherwise humans will learn there are real monsters out there, when they been in hiding for a very long time now, mass chaos would ensue.. and pretty much end of the world.