This volume explores the evolution in language use experienced by children and young people throughout school, and the ways they become more conscious about its multi-functionality and the choices open to them in making meaning. Describes a trajectory of language development in schooling from age 6 to age 18 Draws on systemic functional linguistics to trace changes in the language resources successful children and adolescents use to make meanings in new discourse patterns as they engage in the curricular tasks of science, history, and language arts Explores the way in which content, interpersonal relationships, and textual structure simultaneously evolve over four stages of children's and adolescents' development Offers new theoretical insights and practical awareness of the multi-functionality of language