A.J. and his friends get a Personal Digital Assistant named Miss Porter as a substitute teacher, who can order pizza and tell endless jokes, but grows power-hungry when her system is changed and tries to take over Ella Mentary School.

Sam, Lucy, and Antonio have a new substitute teacher, who happens to be the great-great-grandson of Orson Eerie, the evil scientist whose spirit possesses and infects their elementary school--and the friends are afraid he may be trying to bring Orson back to life.

Atticus Hobart couldn't feel lower. He's in love with a girl who doesn't know he exists, he is the class bully's personal punching bag, and to top it all off, his dad has just left the family. Into this drama steps Mr. Looney, a 77-year-old substitute English teacher with uncanny insight and a most unconventional approach to teaching. But Atticus soon discovers there's more to Mr. Looney's methods than he'd first thought. And as Atticus begins to...

"Milton Worthy can't wait for his class trip to the city zoo. But little does he know that Noah--part time classroom pet ferret, part time evil mastermind--has escaped and stowed away on his school bus. Good thing that Mrs. Worthy, ace world-saving, member of the super-secret Society of Substitutes, is along for the ride! Will Milton and his super-substitute mom be able to stop the zoo from running completely wild?" -- Page [4] of cover.

"Oh, no! Noah, the classroom's evil pet ferret, has stolen everyone's lunch--and worse yet, he's done it on a day when Milton's mom, the class's go-to super-sub, is off on another assignment. Will Milton be able to foil Noah's most fiendish plot yet or will they lose their lunches for good in the gooiest, stickiest, biggest food fight ever?"--

"Keep your friends close and your enemies closer! When Snowball, the puffball hamster in Ms. Kim's classroom, accidentally sips the teacher's leftover protein shake, she transforms into a monster like Beacher Elementary School has never known before. It's all hands on deck to stop Snowball before it's too late. And to do that, Milton Worthy is going to do have to team up with Noah, the part-time classroom ferret, full-time evil mastermind! Will Milton...