The purpose of this study was to examine how opportunities to learn to teach writing in preservice preparation mediated candidates’ appropriation of tools for teaching writing. In this study, the author compared between tools and processes across two university preparation programs in United States. The author found that while the candidates in the Madrona program demonstrated a fairly sophisticated appropriation of writing workshop tools, the Altavista candidates appropriated a wide array of tools at a surface level. This permeable setting in Madrona program supported candidates to develop habits of thinking about pedagogical tools, habits that facilitated uptake of integrated instructional frameworks. However, methods activity in Altavista program focused almost exclusively on the tools and tasks presented in that setting.