I've actually begun working on this already, it's a kiribaku fic, no spoilers tho

Basically most of class 1-a are magical creatures. (Mermaids, vampires, pixies, centaurs, etc.)

Magical creatures are hunted and sent to places so be stuffed and sold or drained of their magic. There are certain safe houses overseen by witches and warlocks (the teachers).

So yeah that's the basic explanation, what do you think?