Twelve-year-old Greg, who has always been good at moneymaking projects, is surprised to find himself teaming up with his lifelong rival, Maura, to create a series of comic books to sell at school.

Ted Hammond loves a good mystery, and in the spring of his fifth-grade year, he's working on a big one. How can his school in the little town of Plattsford stay open next year if there are going to be only five students? Out here on the Great Plains in western Nebraska, everyone understands that if you lose the school, you lose the town. But the mystery that has Ted's full attention at the moment is about that face, the face he sees in the upper window...

With a key to the Oakes School in his possession Benjamin, his friend Jill, and a new friend continue to seek ways to protect the school and their town but Lyman, the janitor and a spy, has new tricks up his sleeve.

As Benjamin Pratt and his friends Jill and Robert continue their efforts to save their school, they find themselves dodging two evil janitors, Lyman and Wally, but their team has also grown and now has a secret fund of millions of dollars.

A fifth-grader starts a newspaper with an editorial that prompts her burnt-out classroom teacher to really begin teaching again, but he is later threatened with disciplinary action as a result.

Seventeen-year-old Gwen, who has been living with her grandfather in Manhattan while she attends music school, joins up with another music student to solve the mystery when her grandfather suddenly goes missing.

After twelve-year-old Natalie writes a wonderful novel, her friend Zoe helps her devise a scheme to get it accepted at the publishing house where Natalie's mother works as an editor.

When fifteen-year-old Bobby wakes up and finds himself invisible, he and his parents and his new blind friend Alicia try to find out what caused his condition and how to reverse it.

An incident at school forces sixth grader Phil Morelli, a white boy, to become aware of racial discrimination and segregation, and to seriously consider if he himself is prejudiced.

Grace and Ellie have been best friends since second grade. Ellie's always right in the center of everything--and Grace is usually happy to be Ellie's sidekick. But what happens when everything changes? This time it's Grace who suddenly has everyone's attention when she accidentally starts a new fad at school. It's a fad that has first her class, then her grade, and then the entire school collecting and trading and even fighting over . . . buttons?!...