When there are significant shifts in what we know about education, it can take a long time before those changes reach all teachers. For Erik Francis, Depth of Knowledge (DOK) is one such framework that needs reexamination. But these shifts don't happen with trainings alone—they require leadership to implement effectively. Francis sat down with the Center for Innovative Leadership to discuss the future of DOK, and how principals play an essential part in successful professional development

Erik Francis is an author and speaker, and currently employs his 25 years of experience in education as owner and operator of professional development company Maverik Education.

Liz Garden is principal of Henry P. Clough Elementary school in Mendon Massachusetts, and serves as fellow at the NAESP Center for Innovative Leadership.

Scott McLeod is professor of educational leadership at the University of Colorado, Denver, and a fellow at the NAESP Center for Innovative Leadership.