In 2006, educators at St. Francis School in Austin, Texas, teamed up with researchers from the Gender and Racial Attitudes Lab at the University of Texas at Austin to examine ways to counteract gender bullying among young children. The project team tested a traditional multicultural technique--using literature to challenge gender stereotypes--against a more experimental one--teaching students catchphrases to interrupt gender bullying. The latter approach produced far greater effects on students' gender attitudes and significantly increased their willingness to take a stand against gender bullying. This curriculum presents six lesson plans that served as the basis of the St. Francis study. Each addresses a particular form of gender bullying: (1) Peer Exclusion; (2) Role Exclusion; (3) Teasing about Gendered Activities; (4) Biased Judgments; (5) Gendered Beliefs; and (6) Highlighting Gender. The lessons are sequenced to introduce the problem, teach students a catchphrase and then practice using the response. [This paper was published in partnership with the Gender and Racial Attitudes Lab of the University of Texas at Austin.]