Dave Nagel has been a professional developer and educational consultant both nationally and internationally since 2003 and has done so as his primary job in education since 2008. Prior was a middle and high school science teacher and administrator in a large district in Indianapolis. As a school leader at Ben Davis High School (enrollment 3000 students) Dave was instrumental in developing a focused plan for differentiated goals for students based on specific proficiency measures which supported the school in improving its graduation rate 14% in just over 4 years.

Dave’s primary areas of expertise are in the areas of effective teacher and leader collaboration, assessment and feedback, and specifically effective grading actions both at the school and classroom level. He has been working specifically with Professor John Hattie’s Visible Learning research since 2011 that is a driving force for all of his work with teachers, coaches, and administrators. He has authored 5 books previous to this one, including four within the PLC+ series of publications (Corwin).

Published multiple times in various publications such as Principal Leadership and Educational Leadership, Dave has also presented at various national conferences.

Dave has a strong moral aspect, strives to be very relatable and practical when working with people, and has a savvy sense of humor that supports him in his life and work. Dave stays very busy with his beautiful and supportive wife, Kristen, and three boys (ages 20, 15, and 13). He acknowledges every day that the Lord guides his actions and is the driving force in his life. Dave is an independent consultant for Corwin Press and is the owner of NZJ Learning LLC (named after his three boys) and the Founder of The Center for Collaborative Expertise.

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.

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.

Karen Flories was the Executive Director of Educational Services for 5 years and Director of Literacy and Social Studies for 2 years with Valley View School District in Illinois, after serving as the English Department Chair for Romeoville High School. Karen’s classroom experience includes high school English, special education, and alternative education. Karen holds credentials in general education, special education, and educational leadership. She earned her master’s degree in educational leadership from Concordia University. During her time at the district level, Karen led the implementation of Visible Learning+, specifically focusing on teacher clarity, classroom assessment, and feedback. Karen is the co-author of The PLC+ Activator’s Guide, PLC+: Better Decisions and Greater Impact by Design, and The PLC+ Playbook, Grades K-12. She is currently a full-time professional learning consultant for Corwin.