Hex Hall novels

On her twelfth birthday, Sophie Mercer discovered that she was a witch. Three bumpy years later, after a prom-night spell gone horribly wrong, she's exiled to Hex Hall, an isolated reform school for wayward Prodigium, a.k.a. witches, faeries, and shapeshifters. By the end of her first day, Sophie has quite a scorecard: three powerful enemies who look like supermodels, a futile crush on a gorgeous warlock, a creepy tagalong ghost, and a new roommate...

Just as Sophie Mercer has come to accept her magical powers as a demon, the Prodigium Council strips them away and leaves her alone, defenseless, and at the mercy of her enemies the Brannicks, a family of warrior women who hunt down the Prodigium.