This paper examines evaluation data use practices of a network of schools implementing an internal, independent, school self-evaluation process for more than a decade. This network currently uses data on its strengths alongside data indicative of its weaknesses, collecting and utilizing both positive and negative data for improvement and accountability purposes. Our findings suggest that identifying strengths is one of the valid goals and outcomes of evaluation, shedding light on its potential to enhance school ethos, and to promote a positive attitude toward evaluation processes and their subsequent effects.