Book excerpt: The Improvement Science Dissertation in Practice provides a narrative and illustration about the purpose and features comprising the Dissertation in Practice and how this culminating experience is well suited to using Improvement Science as a signature methodology for preparing professional practitioners. This methodology, when combined with the Dissertation in Practice experience in EdD programs, reinforces practitioner learning about and skills for leadership and change. As a guide, the book is an extremely valuable resource that supports faculty, students, and practitioners in the application of Improvement Science to pressing educational problems in a structured, disciplined way.