Authors & Presenters

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.

Jeff Byrnes is the former principal of Mountain Meadow Elementary in the White River School District in Buckley, Washington. With over 25 years of experience in elementary education, Jeff specializes in the implementation of professional learning communities and multitiered systems of supports.

Dr. Margarita Espino Calderón, professor emerita at Johns Hopkins University, has worked on numerous research projects from 1990 to 2010 for JHU’s Center for Research on Education of Students Placed at Risk, Center for Data-Driven Reform, and Success for All Foundation.

David (Cal) Callaway, EdD, is the deputy head of school at the International Community School of Addis Ababa in Ethiopia. He has worked in international education since 1998 and has served as both a teacher and an administrator.

Josh Campbell serves as the principal at Mance Park Middle School in Huntsville, Texas, where he focuses on building teacher capacity by coaching collaborative teams through the professional learning communities process and designing effective response to intervention to monitor student and educator performance.

Gloria L. Canada, EdD, is the founder of Circles of Purpose, an educational consulting company whose work focuses primarily on school leadership, family engagement, and poverty awareness.

Carol E. Canady is a literacy advisor with various school districts across the eastern United States. Her passion is to help educators reduce student failure by institutionalizing practices that accelerate reading achievement.

Robert Lynn Canady, EdD, is a professor emeritus at the University of Virginia. He has taught grades 6–12 and served as principal of elementary, middle, and junior high schools.

Paul Cancellieri is a science teacher in North Carolina with 23 years of experience both in the classroom and working with teachers to enhance learning with technology and research-based practices.

Amber G. Candela is an associate professor of mathematics education at the University of Missouri–St. Louis (UMSL). She teaches mathematics methods classes for prospective elementary, middle, and high school teachers in the teacher education program at UMSL.