Posey's fear of starting first grade is alleviated when her teacher invites the students to wear their most comfortable clothes to school on the first day.

For first-grader Posey, every school day is great until her teacher's birthday, when her best friend's gift of an enormous bouquet puts Posey's few, home-grown roses to shame

When Posey's first-grade class gets a new student named Grace, Posey worries that her friends will like the new girl more than they like her, until Posey realizes just how lonely Grace must feel and discovers that Grace could be more than just the new girl, if Posey gives her the chance.

When Posey makes up a funny song about one of the boys in her class, she cannot understand why her teacher is upset with her.