Sibylline by Melissa de la Cruz

Three teens infiltrate the magical ivy league in this heart-stopping dark academia romantasy, the first in a young adult duology from #1 New York Times bestselling author Melissa de la Cruz.

Raven, Atticus, and Dorian have dreamed of attending Sibylline for as long as they can remember. But when the magical ivy league rejects them, the friends’ plans of a future together studying the arcane begin crashing down.
Until they decide to steal an education.
Getting jobs on campus, they sneak into lectures and swipe forbidden texts, dodging the administration’s watchful eye. In the quiet of night, in the thrill of secrecy, their magic awakens. And so do long-buried attractions that turn their friendship into something more.

But like magic, love can create, and it can destroy. As unrequited feelings and resentment threaten to fracture their bond, the trio discovers an insidious magic that has sunk its claws into Sibylline, killing students and corroding the very bones of the university. Now the three intruders may be the key to saving the institution from wreckage . . . if they don’t wreck one another first.