Local implementation of science reform efforts in part relies on science teacher leaders (STLs) to improve science instruction in classrooms and beyond. The lack of science-specific professional learning resources drives STLs to act as boundary spanners to locate resources outside their local context to fill that gap. Museums and other informal…

We explored how various contextual resources accumulated over multiple years operated together to facilitate a team of high school teachers' sustained and agentive learning after a 4-year research-practice partnership (RPP) grant concluded. Specifically, we examined constellations of resources that promoted the co-evolution of the teachers'…