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Robert Eaker, EdD, is a professor emeritus at Middle Tennessee State University, where he also served as dean of the College of Education and interim vice president and provost.

Paul C. Farmer is a practitioner who has worked at the classroom, building, and central office levels. As principal of Joyce Kilmer Middle School, Paul was one of the first principals in Fairfax County, Virginia, to build a PLC.

Kenneth C. Williams, a former teacher, assistant principal, and principal, shares his experience and expertise as a recognized trainer, speaker, coach, and presenter in education and leadership.

Eric Twadell, PhD, is superintendent of Adlai E. Stevenson High School in Lincolnshire, Illinois. He has been a social studies teacher, curriculum director, and assistant superintendent for leadership and organizational development.

Chris Jakicic, EdD, an author and a consultant, was principal of Woodlawn Middle School in Illinois from 1999 to 2007. She began her career teaching middle school science.

Cassandra Erkens is the author of eight books with more currently in progress, as well as chapters in several anthologies. Additionally, she is a facilitator, a trainer of trainers, an educator, and a coach. Her work focuses on educational topics, including assessment, instruction, leadership, school improvement, and professional learning communities.

Anthony Muhammad, PhD, is an author and international thought leader. He served as a practitioner for nearly twenty years where he served as a teacher, assistant principal, and principal. He is recognized as one of the fields leading experts in the areas of school culture and Professional Learning Communities at Work (PLC).