Douglas Fisher, Ph.D., 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 the recipient of an International Reading Association William S. Grey citation of merit and an Exemplary Leader award from the Conference on English Leadership of NCTE. He has published numerous articles on teaching and learning as well as books such as The Teacher Clarity Playbook, PLC+, Visible Learning for Literacy, Comprehension: The Skill, Will, and Thrill of Reading, How Tutoring Works, and How Learning Works. Doug loves being an educator and hopes to share that passion with others. Nancy Frey, Ph.D., is a Professor in Educational Leadership at San Diego State and a teacher leader at Health Sciences High and Middle College. She is a member of the International Literacy Association’s Literacy Research Panel. Her published titles include Visible Learning in Literacy, This Is Balanced Literacy, Removing Labels, and Rebound. Nancy is a credentialed special educator, reading specialist, and administrator in California and learns from teachers and students every day. Olivia Amador Valerio, EdD, was a bilingual teacher in an elementary school, as well as a principal, in San Diego. She holds teaching and administrative services credentials in California and earned her doctoral degree in educational leadership from San Diego State University. One of her most notable accomplishments while she served as a principal with the Chula Vista Elementary School District was receiving the National Center for Urban School Transformation (NCUST) Gold award for impact on student learning. Olivia focuses her efforts on improving teacher clarity and ensuring that all students have access to high-quality instructional experiences. Olivia is a co-author of The Teacher Clarity Playbook. She is currently a full-time professional learning consultant for Corwin. Joseph 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 leads his department’s reform efforts to align to the Common Core Standards – with a focus on high quality instruction. He is a member of the San Diego County Math Leaders Task Force, whose mission is to support every student in meeting the rigorous expectations of the Common Core. Joseph co-authored 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.