A.J. and his friends launch their own investigation when they get stuck with weird substitute Ms. Todd, and begin to suspect she has kidnapped their regular teacher in order to take over the job.

Accepting a temporary teaching job for a group of privileged students who are reeling from a peer's recent murder, aspiring writer Vera Lundy bonds with a fifteen-year-old student whose sinister nature threatens another student and Vera's professional reputation.

When the origami pig that Song Lee made for her grandmother is seized by a substitute teacher, the usually well-behaved third-grader breaks a classroom rule to rescue it from the "June box."

"Hailey Twitch has a secret. She has a friend named Maybelle--a sprite no one else can see. Hailey's class is performing a play that is fun, fun, fun! Hailey wants to the star. But when a substitute teacher takes over the class, he makes the play BORING! Hailey needs Maybelle's help. But Maybelle still doesn't have her magic back"--P. [4] of cover.

Sixth-grader Jake Ali Mathews is slowly settling in at his new school and has a new best friend, Michael, but a substitute teacher arrives who instructs by having her students help with a fledgling pet-grooming company, which strains his friendship and tests his growing popularity.

As the Huit octuplets prepare for a St. Patrick's Day parade, Georgia discovers her powers and uncovers the substitute teacher's secret.

Jamaica copies from a friend during a spelling test because she wants a perfect paper, but her substitute teacher Mrs. Duval helps her understand that she does not have to be perfect to be special.

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...

After she eats his homework, ten-year-old Zack suspects that his substitute teacher Mrs. Wolfowitz is a werewolf and uncovers her bizarre secret.

Oh no! Mr. Granite is sick. A. J. and the gang will have a substitute teacher all week. Yay! But Miss Kraft is weird. She wears a clown costume and uses hand puppets to talk. She likes to do magic tricks. And she's happy all the time. What is her problem?