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Authors & Presenters

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  1. Kim Bailey

    Assessment Collaborative Priority Schools in a PLC at Work™ Professional Learning Communities at Work® RTI at Work™

    Kim Bailey is former director of professional development and instructional support for the Capistrano Unified School District in California. She also served as an adjunct faculty member at Chapman University in California.

  2. Kerry Bollman

    Kerry Bollman is instructional services coordinator and reading center director for St. Croix River Education District. She consults with staff on assessment and instruction, and on developing schoolwide organizational frameworks.

  3. MaryAnn Brittingham

    MaryAnn Brittingham helps educators working with students at risk. She is an instructor and supervisor of student teachers at the State University of New York at New Paltz.

  4. Austin Buffum

    Professional Learning Communities at Work® RTI at Work™

    Austin Buffum, EdD, has more than 45 years of experience in public schools. His many roles include serving as former senior deputy superintendent of the Capistrano Unified School District in California.

  5. Brian K. Butler

    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.

  6. Calli Lewis Chiu

    Calli Lewis Chiu, PhD, is an associate professor in the Department of Special Education at California State University, Fullerton (CSUF). Before joining CSUF in 2018, she was an assistant professor at California State University, Bakersfield, and Shippensburg University.

  7. Daniel Cohan

    Professional Learning Communities at Work® RTI at Work™

    Daniel Cohan is chief of schools for the Jefferson County Public School District in Colorado, where he supervises elementary, middle, and high schools, K–12.

  8. Luis F. Cruz

    Professional Learning Communities at Work® RTI at Work™ Transforming School Culture

    Luis F. Cruz, PhD, is former principal of Baldwin Park High School, located east of Los Angeles, California. He has been a teacher and administrator at the elementary, middle, and high school levels.

  9. Eileen Depka

    Assessment Collaborative

    Eileen Depka, PhD, has a background in assessment, common assessment design, rubric development, standards-based assessment, question design, classroom questioning practices, positive practices in grading and reporting, and the implementation of standards-based grading and reporting.

  10. Darin L. Fahrney

    Professional Learning Communities at Work® RTI at Work™

    Darin L. Fahrney, PhD, is the coordinator for strategic implementation and an upper school teacher at the American International School of Zagreb, Croatia. He brings a broad range of experience and expertise to his work, having previously served as a high school principal, learning support coordinator, gifted and talented coordinator, contributing author, researcher, and consultant.