This chapter explains the concept of cultural guardians to elucidate the range of sanctioned and unsanctioned strategies Latina teachers consciously deploy in order to protect and help co-ethnic children. Latina teachers do not set out to become cultural guardians, but their interactions with poorer co-ethnic students and their families as well as their colleagues prompt them to adopt the role. Because of their own marginalization over the life course, including negative childhood experiences in K–12 schools and beyond, they soon realize how valuable they can be to their working-class Latino students and those students’ families. The process of serving as agents of ethnic mobility and giving back socially to the poor Latino families they serve, however, means they had to do so by stretching and bending institutional policies to provide “more-than-routine” service to Latino children as a result of school rules, policies, and administrative oversight that pervade their work. Latinas who grew up in English-speaking or middle-class families, are multiracial (Mexican and white), or of later generations can also play the role as well as Latinas from working-class backgrounds, especially in multiracial environments, because they all experience exclusion in spaces that privilege whiteness.