This article contributes to an emerging body of literature on the impact of high stakes testing accountability policies on implementation and teaching practice. It uses a theory of implementation, sense-making, to highlight the process by which policy and context shape teacher decision making. We focus on teachers in bilingual classrooms in an urban district in Texas where we found that teachers make decisions in an environment that exerts both formal and informal pressures to limit the curriculum they offer their students and privilege test preparation. Teachers struggle to reconcile their context, constituted by their students' specific pedagogical and linguistic needs, with the pressures of their high stakes testing environment. (Contains 9 notes, 1 table, and 1 figure.)