This book offers a research-based insight into a unique - and growing - group of teachers: those who have decided to undertake doctoral studies as a part of their ongoing professional development. Drawing on interviews with 30 Polish teachers with PhDs, this book illustrates how the doctorate is an important vehicle for strengthening teachers' skills and knowledge, leading them to implement research-based teaching and learning pedagogies in their classrooms. Given these promising findings, this text ultimately seeks to identify implications for policy and practice in the process of building a truly research-rich teaching profession. After all, it is time to rethink the current doctoral education landscape, with the goal of enriching the relationship between research and practice.