Douglas Fisher is professor and chair of educational leadership at San Diego State University and a leader at Health Sciences High and Middle College. Previously, Doug was an early intervention teacher and elementary school educator. He is a credentialed teacher and leader in California. In 2022, he was inducted into the Reading Hall of Fame by the Literacy Research Association. He has published widely on literacy, quality instruction, and assessment, as well as books such as Welcome to Teaching, PLC+, Teaching Students to Drive their Learning, and Student Assessment: Better Evidence, Better Decisions, Better Learning.

Nancy Frey is professor of educational leadership at San Diego State University and a leader at Health Sciences High and Middle College. Previously, Nancy was a teacher, academic coach, and central office resource coordinator in Florida. She is a credentialed special educator, reading specialist, and administrator in California. She is a member of the International Literacy Association’s Literacy Research Panel. She has published widely on literacy, quality instruction, and assessment, as well as books such as The Artificial Intelligences Playbook, How Scaffolding Works, How Teams Work, and The Vocabulary Playbook.

Continuing his collaborative work with colleagues on what works best in teaching and learning, How Tutoring Works, Visible Learning in Early Childhood, and How Learning Works, all with Corwin Press, were released in 2021.

Kierstan Barbee, EdD, is a full-time consultant with Corwin. She most recently served as a project manager of assessment for learning in Dallas Independent School District, which involved creating system-wide professional learning programming for central staff and campuses that promoted the spread of research-based practices. Through an emphasis on relationship-building and human-centered design principles, Kierstan has coached PreK-12 principals, teachers, and district leaders on pedagogical practices that promote equity and student agency. She also previously served as a secondary English Language Arts teacher, academic coach, and professional development supervisor. She holds teaching credentials in Texas and earned her master’s degree from Harvard University and her doctoral degree in educational leadership and literacy from University of Houston.

Joseph Michael Assof is a high school and community college mathematics teacher and the math department chair at Health Sciences High and Middle College in San Diego, CA. He is also an educational consultant and presents internationally on a wide array of topics including teacher clarity, mathematics teaching and learning, visible learning, and more. Joseph coauthored Teaching Mathematics in the Visible Learning Classroom, High School, Teaching Mathematics in the Visible Learning Classroom, Grades 6–8, and The Teacher Clarity Playbook, and his classroom is featured in a number of Visible Learning for Mathematics, Grades K–12 videos. Joseph holds bachelor’s and master’s degrees in mathematics and a doctorate in Educational Leadership with an emphasis in Mathematics Teacher Leadership. Mathematics and mathematics education are Joseph’s second passion—his first being his two beautiful boys, Joseph Fred and Jamie Beau.