Out for Blood: Alyxandra Harvey

Hunter Wild, vampire hunter and star pupil at a top secret slayer academy, has a crush on a guy called Quinn. He's tall, dark and very handsome. He's also a vampire, and one of the infamous Drake brothers at that.
As if forbidden love wasn't bad enough, something strange is also happening at the Helios-Ra academy. Vampire attacks are increasing, students are mysteriously falling ill and the teachers seem completely clueless. It's up to Hunter and her friends to put things right . . . that is, if she can get a certain immortal out of her head long enough to think about anything else.