Using a sociohistoric developmental lens, this paper traces the construction of texts composed by fifth graders in an urban classroom in order to answer the following questions: How do children develop as writers in school? How do writing and drawing function in children's texts? How do teaching practices shape children's writing development? Ethnographic data collected in a fifth-grade classroom reveal how children used drawing to create classroom texts. Data show that drawing is not simply a developmental preface to writing. Rather, when given guided intellectual freedom, children integrate writing, drawing, and pictures in sophisticated and creative ways. The author traces children's text development to show how schooling as an institution bounds and limits their use of their authorial prerogatives, their textual possibilities, and ultimately their developmental potential. She concludes by asserting that we must reconsider development in writing to include not only orthographic symbols, but also the wide array of communicative tools that children bring to writing. Any analysis of development that fails to include an analysis of the corresponding institutional practices and ideologies is liable to be no more than a contribution to the efficacy of that developmental model. (Contains 8 figures and 6 notes.)