Undeadly (The Reaper Diaries, 1) by Michele Vail, November 20, 2012. Published by Harlequin Teen.
The day I turned 16, my boyfriend-to-be died. I brought him back to life. Then things got a little weird Molly Bartolucci wants to blend in, date hottie Rick and keep her zombie-raising abilities on the down-low. Then the god Anubis chooses her to become a reaper—and she accidentally undoes the work of another reaper, Rath.Why: Undeadly sounds like one of those books that will make you laugh at the pitfalls that the main character causes...to herself.
Within days, she’s shipped off to the Nekyia Academy, an elite school that trains the best necromancers in the world. And her personal reaping tutor? Rath. Who seems to hate her guts.
Rath will be watching closely to be sure she completes her first assignment-reaping Rick, the boy who should have died. The boy she still wants to be with.
To make matters worse, students at the academy start turning up catatonic, and accusations fly—against Molly. The only way out of this mess? To go through hell. Literally.