Collective efficacy has become a prominent feature in educational policy and practice with growing evidence that a strong sense of collective efficacy amongst educators leads to better outcomes for students. With growing interest in the importance of collective efficacy and how to cultivate it, the Collective Efficacy Tracking Tool was created to address challenges associated with understanding, diagnosing, and developing collective efficacy. This Framework describes the development of the Collective Efficacy Tracking Tool, defining collective efficacy in a way that it can be operationalised to leverage improvement efforts. The Framework and accompanying Collective Efficacy Tracking Tool provide a practical resource for educators and researchers interested in understanding and developing collective efficacy that positively impacts student outcomes. [This report was created in partnership with the Menzies Foundation through the work of the Menzies School Leadership Incubator.]