Graham Nuthall described research findings from his recent classroom studies as educationally transformative, analogous to the shift to a Copernican universe. In honouring this assertion, we focus on two aspects of Graham's work: the role of theory in his scholarship, and the relationship between his scholarship and the pursuit of educational equity. In each case, we speak to why these aspects of his work are important and how each facet of his work is poised to advance the enterprise of education. Finally, we address some of the transformative implications of these two aspects of Graham's work for educational research and teacher education.