The Indigo Spell (bloodlines) by Richelle Mead

After her forbidden moment with Adrian, Sydney is struggling to draw the line between her Alchemist teachings and what her heart is telling her. Now she's met a former Alchemist named Marcus Finch, who's very handsome, and wants her to join his group of rebels. Meanwhile, there's an evil witch on the loose killing innocent people and Sydeny will have to embrace her magic to stop her.

I really enjoyed this book and I'm loving the series. I'm not sure if it's as good as Vampire Academy, but for a spin off, it's great. I especially love Adrian! I will await the next installment.