This case study investigated parental language ideologies and the underlying social and familial factors affecting the construction of attitudes toward bilingual parenting and how the parents' ideologies affected the formation of family language policy and home language practices. Numerous familial factors were examined, such as parents' socioeconomic status, educational attainment, and relationships with their children, as well as social context factors. The results of the study suggested the interconnectedness of the parents' beliefs with the status of the English language in Korean society and the role of family capital in supporting English language use at home. Several factors affecting bilingual parenting were also investigated, such as parents' language proficiency, available learning resources, and parents' consistency in parenting, and use of English as the medium of communication at home. The results may resonate with the experiences of many Korean parents who have been practicing home bilingual education or are planning to do so in the near future.