How do proficiency-based accountability systems affect inequality in academic achievement? This article reconciles mixed findings in the literature by demonstrating that three factors jointly determine accountability's impact. First, by analyzing student-level data from a large urban school district, we find that when educators face accountability…

Central to sociology is the assumption that virtually all forms of social action and public policies have unanticipated consequences for their actors and social systems. Sociologists seek to explore these unanticipated consequences and delineate how they will affect people, policies, and practices. This essay focuses on the unanticipated…