George and Harold and their doubles, Yesterday George and Yesterday Harold, have been taking turns going to school, but when the doubles fall prey to their gym teacher, Mr. Meaner, and his method of mind control that turns students into attentive, obedient, perfect children, it is up to original George and Harold to strike back.

Young Joe and Ravi think they have nothing in common. Joe has lived in the same little town his whole life, but recently his best friends moved away, leaving him alone. Ravi and his family just moved there from India, and he just wants to fit in. When the two boys run afoul of the same bully, they discover they do have something in common after all, and scheme together to take control of their lives.

"A.J. is graduating! But a crazed PTA president is turning second-grade graduation into a huge affair complete with fireworks and skywriting. By the time this graduation ceremony is over, there won't be any time left for summer vacation!"--Jkt.

Led by Duncan "Gluestick" Dewey, the NERDS team uses brain power and courage rather than gadgets when they face off against supervillain Simon, his band of savage squirrels, and Albert, a middle-aged computer genius who lives with his mother.

When Eva Wingdale sees something large and white flying above her she is convinced that it is a ghost, although most of the other owls just laugh at her--until something large and heavy and white lands on the school roof.

Ryan wants to form a curling team at school with A.J. and Andrea, but soon trouble amongst his teammates threatens to end their season early.

Eva wants to be friends with Hailey, the new owl in her class, but when Hailey seems to prefer Lucy's company, Eva starts to feel left out, and even a little jealous of her best friend.

Alexander has just moved into Stermont, but the elementary school is being torn down, his new classroom is located in the hospital morgue, a notebook he finds is full of information about monsters--and everywhere he turns there are spooky balloon men determined to attack him.

When the new vice principal is put in charge of Ella Mentry School for a few days, she tries out some very unusual ideas about how students learn.

Sam Graves discovers that his elementary school is alive and plotting against the students, and, as hall monitor, it is his job to protect them--but he will need some help from his friends.