The Cat Ate My Gymsuit (1974) by Paula Danziger is a children's novel that follows Marcy Lewis, a ninth-grade girl struggling with self-esteem due to her dysfunctional home life. Her father is emotionally abusive, and her mother is passive. Marcy's anxieties are compounded by her weight and high school challenges, including an F in gym class due to creative excuses. However, her life changes when she encounters Ms. Finney, a passionate teacher who encourages emotional expression and personal growth. Marcy joins a student club, Smedley, which sparks her transformation as she begins to challenge her family dynamics and social fears. When Ms. Finney is unjustly fired, Marcy leads a protest that culminates in a courtroom victory for the teacher. Despite Ms. Finney’s departure from the school, Marcy grows from the experience and develops a new sense of self. The novel portrays themes of personal growth, family dysfunction, and the enduring impact of a great teacher.