Authors & Presenters

Barbara Phillips is an educational presenter and researcher from upstate New York with over 20 years of experience in public education. She specializes in effective instruction and leveraging teacher strengths to maximize student achievement and learning.

David Pillar, EdD, a former Model PLC at Work® middle school principal, is assistant director at Hoosier Hills Career Center with the Monroe County Community School Corporation in Bloomington, Indiana.

Hannah Polk, EdD, serves as a principal in a large metropolitan school district in Georgia. Her pursuit of excellence is evident as she advocates for high levels of learning for all students. In addition, she is passionate about guiding educators on paths to improve school culture, navigate difficult conversations, and enhance the overall effectiveness of their collaborative teams.

Karen Power is an educational presenter and a former teacher, principal, superintendent, and senior advisor for professional learning and leadership. Karen has implemented the PLC process both as a principal and as a superintendent, and for several years, she has supported collaborative work in schools to meet the needs of students.

Maren Powers is an award-winning teacher, instructional coach and author. Because of her experience as a practitioner, she has learned how to do the work successfully. Maren is passionate about helping other educators implement, coach, and lead through the PLC process.

Nathaniel Provencio is associate superintendent in Prince William County, Virginia. Under his leadership, Minnieville Elementary School was recognized as a Model Professional Learning Community and was the 2019 winner of the prestigious DuFour Award.

Jackie Ramsay-Tolman, MEd, is the director of learning and instructional impact for the Essex Westford School District in Vermont. As a former classroom teacher, special educator, and principal, she brings deep knowledge, passion, and empathy to her work.

Mary Ann Ranells, Ph.D., has over 45 years of experience in education as a teacher, principal, district administrator, and superintendent. She is passionate about coaching educators in professional learning communities to ensure high levels of learning for all.

Keri Rathbun, EdD, is the director of Coordinated School Health and Career Counseling for Fort Smith Public Schools, Arkansas. She has worked in education for more than 20 years and served as an administrator at the middle and high school levels.

James Rawls serves as a principal in a large metropolitan school district in Georgia. His passion for education is evident through his experience of more than 20 years in the field.