This critical ethnography examined the motivations of, and processes used by teachers to advocate for the inclusion of students with exceptionalities in their Catholic school. Because students with exceptionalities have been marginalized in k-12 Catholic schools, learning more about teachers who have been successful advocates on their behalf is essential to building more inclusive schools, as well as inclusive local and global communities. The findings of this study help to identify some key elements for teacher-led advocacy including practices that align with ethical leadership and that encourage teachers to take risks and pursue passions when there is potential for positive student outcomes. As a result, school culture may be transformed to include more fully those students who have been marginalized within the school or community.