Knowledge of pedagogy and social studies content influences a teacher's decision making and helps teachers conduct sound instructional practices despite the influence of high-stakes testing policies. Using national data from the Survey of the Status of Social Studies (S4), this study examined the associations of teachers’ professional characteristics, school environmental factors, and state testing policy on self-reported levels of authority that secondary level social studies teachers (grades 6–12) hold over key classroom tasks. Through hierarchical multiple regression analysis, key findings from (...) this study indicated that greater minority enrollments are associated with lower levels of instructional authority. Teachers who worked in states where a state-mandated social studies test was administered reported less freedom to choose what to teach and how to teach than those in non-testing states. Also, this study showed that in-field status, the type of licensure, and years of teaching experience are important factors in exercising social studies teachers’ instructional authority (e.g., their ability to balance effectively the demands of state-mandated reforms with teaching for meaningful student learning). This study recommends that schools with high minority enrollments, especially if these districts exist in a high stakes testing environment, should invest in teachers with high-quality social studies preparation. (shrink)