Her Bad Boy Alpha by Serena Dawson

There are nasty rumors going around The Academy. And they’re all about her bad boy boyfriend…

Harper Henry has a lot to prove if she’s going to survive at The Academy. To protect their school, she must learn how to harness her powerful magic, but more importantly, she wants to show everyone—including herself—that she’s worthy of Roarke Mitchell.
All Roarke wants is to make his own way at The Academy after being disowned by his father, but the return of a mysterious teacher specializing in battle magic threatens to jeopardize everything.
Ms. Vexana Sheffield takes her job seriously. She treats the classroom like a battlefield, and for reasons no one can explain, Harper and Roarke are the enemy. Then Harper starts hearing whispers about an old affair between a student and teacher, and she becomes determined to prove she’s the better woman, no matter how much Roarke denies it was him.
Before the semester is finished, Harper and Roarke will need to decide where their loyalties lie, and if they still lie with each other…