Horrible Harry of classroom 2B cuts back on his mischievous pranks after falling for Song Lee.

When their teacher ends up in the hospital, the members of class 2B find a way to include her in their holiday celebration.

As Valentine's Day approaches, the students in Room 2B are preoccupied with kickball and a possible wedding between Horrible Harry and Song Lee.

It's almost summer vacation and the students in room 2B are having trouble concentrating on their butterfly project, until a frightening-looking new teacher comes to supervise the Suspension Room and Harry is sent there as punishment for unruly behavior.

Inspired by his third-grade class's study of the moon, Harry announces that he is going there.

Suzy Kline is a favorite author of children's books. Her best-selling Horrible Harry books are wonderful stories that any school-aged child will enjoy. According to Kirkus Reviews, "Kline hits the nail on the head once again by telling a real classroom story." In Room 3B, longtime best friends Horrible Harry and Song Lee are fighting. Song Lee hasn't spoken a word to Harry ever since their teacher, Miss Mackle paired them to work together. Will they...

Harry persuades his classmates to sneak through the playground fence during lunchtime recess to view some unusual mushrooms.

When Horrible Harry's pet cat, Googer, sneaks a ride and gets into the school building, third-graders Harry and Doug have to catch him before anyone else does, which means going into some forbidden places.

When Sid, his annoying third-grade classmate, ruins Song Lee's origami praying mantis, Horrible Harry plots triple revenge on the troublemaker.

Harry incorporates his fascination with earwigs into Miss Mackle's class project of acting out a fairy tale in front of the other third graders.