Thirteen-year-old Claudia wants to prove that she should be a junior counselor at Blue River Camp next year, but first she must face mean girls, the boy she has a crush on, a seven-year-old rascal she often babysits, her own bad luck, and a challenging swimming test.

Thirteen-year-old Claudia learns about the American justice system when, while studying for an American history quiz at Anna's house, she and her friend Monica are accused of stealing ten dollars and their classmates believe them to be guilty, based on circumstantial evidence.

The Cortez family is going on vacation! They're headed to Florida for a family reunion. But when they arrive, Claudia doesn't get to relax - she's stuck babysitting her younger cousins. She has to miss out on all the fun, and can't hang out with her new friends. What kind of vacation is that?

Claudia is tired of being left out of popular princess Anna's parties, so she decides to throw one of her own. The problem is, parties are expensive. To foot the bill, Claudia takes on extra jobs. But between school, babysitting, dogwalking, and running errands, she doesn't have much time left for her friends. What good is a party when there's no one to invite?

Claudia has had a crush on Brad Turino for as long as she can remember. She's thrilled when Brad asks her for help with homework. But when cute new boy Rusty Alvarez moves to town and asks her out on her first date, she doesn't know what to do!

Family can be such a pain. Parents don't understand. Siblings are annoying. Aunts and uncles are boring. Claudia's family, though, gets along great. They make an effort to stay connected and find ways to all have fun together. Claudia shares some secrets on getting along with your family members and making family time fun.

Claudia and her friends support each other and have loads of fun together. But they don't always get along, and when they argue, they are miserable! Claudia always tries to fight fair and remember that her friends are some of the most important people in her life. Her advice can help anyone become a better friend.

When you are thirteen, making money is pretty complicated. Most places don't hire kids until they are at least sixteen. Claudia is here to help. She has some great tips on finding jobs that fit your interests and abilities. But all work and no play makes a kid boring and stressed out. So Claudia also dishes up advice on getting the most out of free time.

Jenny Pinski is the biggest bully at Pine Tree Middle School. Claudia is paired up with her for a science project. Some of Jenny's ideas are awful, but Claudia is afraid to disagree with Jenny. Is her project doomed, or will Claudia find out there's more to this bully than bullying?

All the seventh graders have to find jobs for Work Week. Claudia's job should be a piece of cake, but starting on day one, she feels like she's messing up. Can she figure out how to keep her job, or will Claudia be the first person ever to fail Work Week?