Katie wants to go to Suzanne's sleepover party, but Jeremy wants her to ride the new roller coaster with him. Annoyed, Jeremy and the other boys decide that all girls have cooties. When Katie literally finds herself in Jeremy's shoes, she tries to reunite the boys and girls. Illustrations.

Katie, who has never cooked a thing alone, switches into Louie the chef at a pizza parlor sponsoring a pizza-eating contest.

Katie agrees to be a buddy for the new girl in class even though her best friend Suzanne does not approve.

Third-grader Katie Carew gets into trouble for breaking school rules, but when she magically turns into the school's principal and eliminates all rules, things get out of hand. Includes directions for playing Four Square, Statue Tag, and Poison.

Snubbed by her best friend Suzanne, Katie magically turns into her as she is making her modelling debut at a fashion show at the mall. Includes a recipe for fruit salad.

Katie and her third-grade class go on a field trip to the natural history museum where Katie finds herself magically transported into the body of their tour guide.

When fourth-grade Katie turns into her unfair track coach, she gives all the members of the team a chance to compete, including the slowest runner in her class.

When Katie and Suzanne learn that their favorite band, the Bayside Boys, will perform in Cherrydale, they think their biggest problem is how to get tickets, but Katie magically turns into one of the Boys and causes the band to break up.

Katie is very excited about her family's trip to London, Paris, Madrid, and Venice, but when the magic wind strikes not once, but four times, Katie's European vacation is turned upside down.

Fourth-grader Katie is concerned when an older girl uses live mice in a science fair project, but when Katie turns into the sixth-grader and has to run the experiment herself, she has a different opinion of the student.