The study presented in this paper examines languaging in a "bilingual" school setting. Theoverall aim here is to explore young people’s doing of multilingualism as well as social posi-tioning in and through the everyday social practices where literacy is salient. Anchored inperspectives that highlight the social construction of reality, and located in the geopoliticalspace of Sweden, this study investigates an educational setting where Swedish and Finnishare used as the primary languages of instruction but where other linguistic varieties arepresent. In the paper, the analytically relevant concept of chaining is empirically illustratedthrough the analysis of ethnographically created data. These data include video recordingsof classroom interaction and materials framed within the school diary literacy practice. Thechained flow of various oral, written and multimodal varieties in human meaning-makingis presented as an analytical finding.