2.5 stars 
 Meh. 
 I just don't really have a whole lot of feelings about this book, good or bad. It's one of those inoffensive, decently written book with a heroine and antagonists lackluster enough so that I've little about which to complain. Everything is average. The writing is decent. I don't love it. I don't hate it. I can read it all the way through without getting so bored that I switch to another book on my ereader. 
 School Spirits is a spin-off of Rachel Hawkins' other YA series, Hex Hall. We meet Isolde Brannick and her demon-killing family (calling them Amazons wouldn't be too far off) because for the most part, the males in that family are largely optional and expendable, desired not so much for love, but rather for their superior warrior capabilities contributing to a better gene pool in which to breed kick-ass Brannick female warriors. Rawr! 
 In the previous series, we first meet the Brannick family when they're trying to kill their cousin, Sophie. There's a little dysfunctional family thing going on there. Isolde, Finn, and their mother live an isolated life in which they're the last of their line, and dedicated to killing demons, witches, and other Prodigium. As such, at the start of this book and throughout much of it, Isolde (izzy) has zero social skills and has never led anything close to a regular life. She does not get along well with her mother, whom she suspects of seeing Izzy as a failure compared to her sister, Finn, and her only friend is Tobin, a wizard who somehow got stuck in a mirror her family has owned for 500 years. 
 Izzy is on a mission to infiltrate a school and destroy the ghost that killed the science teacher. She meets and befriends the school weirdoes, who are amateurs that have formed a paranormal society. Izzy encounters typical high schooler problems, such as boys, and is completely unprepared to deal with high school life. 
 This book is like a contemporary awkward teenager surviving high school novel with hints of paranormal. The characters are annoying but nothing overly so, but nobody is so memorable either. 
 The ending: o____o. Really? It's not believable in the least, just considering the characters...I can't really see the inimitable and intimidating surviving matriarch of the Brannick family agreeing to that. 
 I can't really recommend this book because of how forgettable it is for me, personally.