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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.

Brian Dean, a former teacher, is senior instructional specialist in secondary mathematics for the District School Board of Pasco County, Florida, where he leads mathematics teaching and learning.

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.

Brad Cawn is a teacher educator, author, researcher, and trainer who specializes in helping schools and teachers integrate ambitious teaching and learning—inquiry-based instruction, disciplinary literacy, project-based learning, etc.—across the content areas.

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.

Bill Barnes is the superintendent for the Howard County Public School System in Maryland. Bill was a recipient of the Presidential Award for Excellence in Mathematics and Science Teaching and has served on the board of directors for the National Council of Supervisors of Mathematics. Bill is passionate about working to ensure that students graduate with their dream intact.

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.

Barbara Moss, PhD, is a professor at San Diego State University, where she teaches courses at the credential and master’s levels. She has worked as a teacher at every grade level from 1 to 12 over the course of her career.

Barbara W. Cirigliano, EdD, is the former principal of Willow Grove Kindergarten and Early Childhood Center in Buffalo Grove, Illinois. She has more than 40 years of experience, focusing on early education, elementary education, and special education.