This qualitative case study examined the interactions between four Mexican parents from immigrant backgrounds and their children during the process of creating two biliteracy family projects that centered on their experiential knowledge. Informed by a theoretical lens of sociocultural linguistics and community cultural wealth, this study examined the kinds of linguistic capital in parent-child interactions that present a contrastive micro analysis within the macro context of a school district with a history of linguistic oppression and discrimination. The main data sources were the recorded interactions between parents and children that took place in their homes and classroom workshops. Findings demonstrate the ways that children's agentive roles were produced through discursive patterns, and how parents and children engaged in metalinguistic negotiations and co-constructions from oral to written descriptions that followed a gradual increase in complexity. Findings revealed how these linguistic resources supported children's learning, literacy and identities, a dire contradiction to the oppressive and racist structures and policies in the school district.