Authors & Presenters

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  1. Philip Warrick

    Philip Warrick

    Philip Warrick, EdD, is an author and consultant and has worked globally in the areas of school leadership, instruction, collaborative practices, and grading.

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  2. Gabriel Ward

    Gabriel Ward


    Gabriel Ward is an elementary math specialist for the Hacienda La Puente Unified School District in Los Angeles, California. Previously, Gabriel taught at the preschool, elementary, and middle school levels.

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  3.  Jamie Virga

    Jamie Virga

    Jamie Virga has been a teacher, principal, district staff developer, principal coach, and associate superintendent in Montgomery County Public Schools in Maryland for more than 20 years.

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  4. Gerry Varty

    Gerry Varty


    Gerry Varty has served as a classroom teacher, principal, director of curriculum and instruction, assistant superintendent (learning and system improvement), and executive director of professional development.

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  5. Jonathan G. Vander Els

    Jonathan G. Vander Els

    Competency-Based Learning Professional Learning Communities at Work®

    Jonathan G. Vander Els is the director of innovative projects at the New Hampshire Learning Initiative, a foundation created to serve as a catalyst for innovation in education in New Hampshire. He was formerly the principal of Memorial Elementary School in the Sanborn Regional School District.

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  6. Mark Van Clay

    Mark Van Clay

    Leadership Professional Learning Communities School Improvement

    Mark Van Clay, EdD, is a consultant who specializes in aligning school systems. He also works with the Consortium for Educational Change and has 30 years of experience in education.

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  7. Javier Vaca

    Javier Vaca

    Instruction Literacy

    Javier Vaca is a teacher and instructional coach at Health Sciences High and Middle School in California. He previously served as an elementary school teacher and a reading intervention specialist.

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  8. Susan Udelhofen

    Susan Udelhofen

    Assessment School Improvement

    Susan Udelhofen, PhD, has 15 years of experience as a consultant. She provides professional development on some of the most relevant topics in education, including the Common Core, assessment, and school improvement.

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  9. Eric Twadell

    Eric Twadell

    Assessment Competency-Based Learning Leadership Response to Intervention Social and Emotional Learning Teams

    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.

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  10. Maria N. Trejo

    Maria N. Trejo

    English Learners Instruction

    Maria N. Trejo, EdD, is a consultant who provides training, coaching, and instructional leadership support. She also designs professional development events, webinars, and international teacher exchanges.

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