The writing of transnational youth has continued to emerge as a promising area of research in writing and literacy studies, and yet despite the breadth of this work, few studies have examined transnational students' writing about social and racial justice. Drawing on theoretical contributions of coloniality, this article highlights the experiences of one immigrant adolescent's participation in a secondary ethnic studies course in California. In this study, photovoice was used as a mutually informing classroom writing pedagogy and research methodology to understand how students in an ethnic studies course problematize the dominance of Whiteness in school. I specifically analyze field notes and a focal student's writing and interviews to demonstrate (a) her understandings of her participation in this course and (b) the ways in which her writing of self was a form of curricular justice that spanned school and home. These findings help to amplify writing as a tool for social justice and remind us that literacy and students' histories are inextricably linked.