The ALP Trust Leadership Team, needed a more consistent way to monitor school performance and make their improvement visits more effective. They wanted to move away from fragmented data and instead foster objective, evidence-based dialogue with Headteachers. A major priority was to understand the disparity between reading and writing results across the Trust. This process eventually helped the team uncover and address unconscious bias in marking, with the benefit of creating a reliable benchmark to track pupil progress accurately moving forward.