This book is so cute!!! I loved the "Simon" bits in Fangirl, and getting a whole book about Simon (and Baz)?? Perfect. The story is a clever and sweet spin on the story of a boy wizard at magic school (yes, it's quite like that OTHER one), both paying tribute to the original and having a bit of fun with the tropes. 
 The characters themselves and their relationships and struggles are really fun and engaging. I read this book in a whirlwind 2-day reading session, and my initial reaction was that I loved it all. And I mostly still do, except that the resolutions are a little less satisfying once there's time to think about them, and I wish certain threads had a more complete explanation. 
 It also bothers me that (view spoiler)[ Simon never finds out the truth about his parents, and no one seems to know the truth about Lucy. (hide spoiler)] 
 Still, that's a relatively minor complaint, and doesn't take away from the fact that I had a great time reading this book!