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Jonathan G. Vander Els specializes in supporting teachers and administrators in schools and districts across the country in developing, sustaining, and enhancing structures to support all learners.

Jennifer L. Sparrow is deputy superintendent of Singapore American School. She spent 13 years as a middle school teacher and 11 years as a schoolwide administrator.

With over 30 years of experience in K–12 education, author and education expert Jeanne Spiller is an associate with Solution Tree, supporting schools and districts through workshops, coaching, and collaborative initiatives to enhance instruction, foster innovation, and promote equity.

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.

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.

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 Reibel hails from Adlai E. Stevenson High School in Illinois and is the current assistant principal for teaching and learning. Anthony is also coauthor of several books: Proficiency-Based Assessment, Proficiency-Based Instruction, Proficiency-Based Grading in the Content Areas, and Pathways to Proficiency which explore the relationship between proficiency, pedagogy, and evidence-based grading.

Ainsley B. Rose is an author, a presenter, and a consultant. An experienced elementary and secondary teacher and principal, he is former director of education for the Western Quebec School Board.