Several studies have examined the lack of or the insufficient preparation of K-12 educators to work in intercultural and bilingual (IBE) schools in Chile, but little is known about the preparation of educators to teach in IBE preschools. Even less is known about teachers' perceptions of their own preparation. This work contributes to a growing body of literature that examines the experiences and practice of second language teachers in Indigenous language education settings from a sociocultural perspective. This qualitative case study focuses on teachers' perceptions of their preparation to teach Mapudungun, the language of the Mapuche people, in urban IBE preschools in Chile. Ferrada, & Villena, 2013). In addition, relevant research on teacher education for IBE settings is limited in Chile, with few of these studies focused specifically on the preparation of teachers to teach in IBE preschools.The small number of relevant studies, as well as their findings with respect to insufficient teacher preparation, are not surprising if we consider that university programs for teacher education in IBE schools are very limited in Chile. There are only two such programs in Chile, and neither of them is located in Región Metropolitana, the capital region, even though this region has the fastest growing population of Indigenous people in the country. This lack of teacher education programs for IBE in Región Metropolitana suggests that preschool teachers may face crucial issues when teaching in IBE preschools. First, these teachers may not have received relevant or adequate linguistic and cultural preparation for IBE; second, they will be teaching in an area-Región Metropolitana-that sees itself as a "white" and "modern" city, while rejecting and ignoring the presence of native Mapuche people (Aravena, 2007). In short, these teachers are not professionally prepared, and they may not be even aware of diversity and Indigenous children in their schools, despite the widely researched importance of culturally responsive pedagogy in teacher preparation programs (e.g., Cochran-Smith, 2004;Gay, 2002Gay, , 2010Villegas & Lucas, 2002).To address these issues, we focused this study on preschool education, as this is the only level that acknowledges IBE education from the standpoint of an entire school as opposed to the mainstream elementary and secondary schools in Chile that offer a single course or class on Indigenous language and culture. Additionally, we focused on IBE preschools because Indigenous communities in Chile consider the education of young children as crucial for the revitalization of Indigenous languages.In this study, we aim to identify teachers' perceptions of their needs regarding their preparation to teach language (specifically, Mapudungun) in emergent bilingual settings, such as IBE preschools. This study is focused on the Mapudungun language as it is the language of Mapuche people; it is one of the This study addresses in part the directive of the IBE program in Chile to develop additive bilingualism in ...