Cassandra Erkens is the author of eight books with more currently in progress, as well as chapters in several anthologies. Additionally, she is a facilitator, a trainer of trainers, an educator, and a coach. Her work focuses on educational topics, including assessment, instruction, leadership, school improvement, and professional learning communities. As an educator and recognized leader, Cassandra has served as a middle and high school English teacher, a director of staff development at the district level, a regional school improvement facilitator at the state level, a director of staff and organization development in the private sector, a contracted curriculum developer for trainer-of-trainer programs in major education companies, and an adjunct faculty member for multiple universities. Today, she is a lead architect for the Assessment Collaborative at Solution Tree.