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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.

Cheryl O’Leary is principal of Thomas Edison Primary School, a Title I school located in Kankakee, Illinois. Cheryl implemented professional learning community concepts and results-driven professional development that brought about substantial, schoolwide change.

Charlie Coleman has been a principal at the high school, middle, and elementary school levels in ethnically and socioeconomically diverse communities, where he effectively decreased behavior problems and increased academic success. Creating positive learning environments for ALL continues to be a priority for Charlie, and he has experience improving school culture in many schools, K–12.

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.

Brian M. Pete comes from a family of educators—college professors, school superintendents, teachers, and teachers of teachers. He has a rich background in professional development and has worked with adult learners.

Brian K. Butler is an educational presenter with over 30 years of experience who has worked with thousands of schools throughout the U.S.A., Australia, and Canada presenting on the PLC at Work and RTI at Work models. Brian is a retired principal who last served at Mason Crest Elementary School in Fairfax County, Virginia in 2017. Under Brian’s leadership, Mason Crest received Solution Tree’s first annual DuFour Award in 2016.

Brandon Jones, an author and consultant, works with educators to implement the Professional Learning Communities at Work® and RTI at Work™ processes. As a practitioner, he has served as a high school teacher and assistant principal, as well as a principal at the elementary, middle, and secondary level.

Bob Sonju is an award-winning educational leader, author, and speaker known for his energetic and passionate commitment to making the work of schools and teacher teams simple, doable, and impactful.

Bill Hall is the former director of educational leadership and professional development for Brevard Public Schools in Florida. He has served as a classroom teacher, assistant principal, and principal.

Beth Russell, EdD, has worked with numerous urban and suburban school systems introducing personality type theory and teaching its value as a tool for differentiation, classroom management, culturally responsive teaching, instructional coaching, and collaboration.