Authors & Presenters

Dr. Aspasia Angelou has 25 years of educational experience as a teacher, teacher trainer, high school principal, and director of high school design and superintendent.

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.

Luis F. Cruz, PhD, is a sought-after presenter, coach, thought leader, and accomplished author with over 30 years of experience in education.

Dr. Jim Cummins supports school leaders wanting to build student-centered cultures. During his 30 years of positively impacting students, he served as coach, teacher, principal, superintendent, and junior college vice president.

Robert Eaker, EdD, is a professor emeritus at Middle Tennessee State University, where he also served as dean of the College of Education and interim vice president and provost.

Sal Herrera is the principal at Robertson Continuation High School in Fremont, California. He specializes in coaching collaborative teams, designing an effective multitiered system of supports (MTSS), and building a culture of collective responsibility.

Timothy D. Kanold, PhD, an award-winning educator and author, is former superintendent of Adlai E. Stevenson High School District 125, a Model PLC at Work® district in Lincolnshire, Illinois.

Josh McMahon, EdD, is the assistant superintendent of education programs for Morton District 201 in Illinois. Previously, he served as principal of Morton West High School.

Anthony Muhammad, PhD, is an author and international thought leader. He served as a practitioner for nearly twenty years where he served as a teacher, assistant principal, and principal. He is recognized as one of the fields leading experts in the areas of school culture and Professional Learning Communities at Work (PLC).

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.