Demonglass by Rachel Hawkins 

Sophie Mercer thought she was a witch. That was the whole reason she was sent to Hex Hall, a reform school for delinquent Prodigium (a.k.a. witches, shape-shifters, and faeries). But then she discovered the family secret, and the fact that her hot crush, Archer Cross, is an agent for The Eye, a group bent on wiping Prodigium off the face of the earth.

Turns out, Sophie’s a demon, one of only two in the world-the other being her father. What’s worse, she… Read more.