I don't get why some people are saying The Book of Ivy is better. Honestly, I loved this even more. It had more action, more character development, more people they interaction with, more friendship, MORE BISHOP AND IVY MOMENTS, basically more excitement than the first book. If the first book had more The Selection vibes, The Revolution of Ivy is a mixture of The Selection and Hunger Games (though the beginning was the part that gave me that feeling, the middle and last parts were all originally different). 
 If you loved The Book of Ivy, you will definitely love this even more. 
 PS: Can I just say something? I really, REALLY hate Callie. 
 PPS: It's official. I'm in love with Bishop Lattimer.