Nadia Higgins 
Zombie Field Day 
Zombie Zappers Book 2

Zombies are about to get schooled. Leo and Chad are glad to be back at Rotfield Middle School with their friends, but they can’t help noticing some of their classmates are acting a little…undead. The Zombie Zappers are determined to find out why. And since Principal V won’t help them stop the zombie outbreak, they’re the only ones who might be able to save their fellow students.