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Garrick Peterson helps teachers and administrators become high-functioning PLCs with a specific focus on making the connection between assessment and intervention.

François Massé is a superintendent of education for several schools and has been working in collaboration with educators to transform the culture of these institutions into professional learning communities.

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.

Eileen Depka, PhD, has a background in assessment, common assessment design, rubric development, standards-based assessment, question design, classroom questioning practices, positive practices in grading and reporting, and the implementation of standards-based grading and reporting.

Dennis King, EdD, has focused on school improvement throughout his career, first as a practicing school administrator and now as an educational presenter. His 28 years in education include teaching in an alternative school, an urban high school, and two suburban school districts where he also served as a district administrator.

David LaRose is an education coach and presenter specializing in PLCs, RTI, leadership, and organizational culture. He is former superintendent for Culver City Unified School District in California.

Darin L. Fahrney, PhD, is the coordinator for strategic implementation and an upper school teacher at the American International School of Zagreb, Croatia. He brings a broad range of experience and expertise to his work, having previously served as a high school principal, learning support coordinator, gifted and talented coordinator, contributing author, researcher, and consultant.

Daniel Cohan retired in 2023 as chief of schools for the Jefferson County Public School District in Colorado, where he supervised elementary, middle, and high schools, K–12.

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.