At a time when there are demands for teachers around the world to become increasingly skilful and knowledgeable, this book provides an invaluable insight into how this may be achieved through their pursuit of doctoral studies. A close study of a sample of teachers in Poland [...] reveals rich insights to their motivations, experiences and the impact on their professional work. Throughout Kowalczuk-Walędziak’s work, the authentic voices of these teachers bring great life to the text. By grounding the study in an impressive range of relevant international scholarship, Kowalczuk-Walędziak has written a book that will be of enormous interest to teachers, teacher educators and policymakers across the globe. It provides a major - and groundbreaking - contribution to the development of teaching as a research-rich profession.Ian Menter, Emeritus Professor of Teacher Education, University of Oxford, Former President of the British Educational Research Association