This paper will provide an overview of how improvement science methods have been applied to the practical measurement and improvement feedback of an art museum education program that integrates arts learning and STEM. The problem of practice, drivers of change, and practical measures will be played out across several collaborative design and evaluation cycles with a team of museum educators, content experts, teachers and an evaluator. A comparison will be made between an initial provisional report generated by the external evaluator, and the final report that included the participation and insights of the education team who engaged in the improvement science process. Methodological connections will also be drawn between improvement science methods and collaborative, participatory, and developmental evaluation approaches in the education context.