Gavin Grift has experience as a teacher, an assistant principal, and an educational coach. He has written and presented on numerous topics, including cognitive coaching, professional learning communities, collaboration, and learning-centered leadership.
Tammy Heflebower, EdD, is senior scholar at Marzano Research. She is a highly sought-after school leader and consultant with vast experience in urban, rural, and suburban districts throughout the world.
Jan K. Hoegh is associate vice president of Marzano Research. She has been a classroom teacher, building-level leader, professional development specialist, assistant high school principal, and curriculum coordinator.