This conclusion presents closing thoughts of key concepts discussed in the previous chapters of this book. Spending so much of time and energy engaging with the real world of ongoing instructional practices at institutions, in K-12 schools, with states and stakeholders. It's rare to be able to dig into the scholarship, driven by the curiosities and interests. Teacher Preparation Issues, a proposal by the United States (US) Department of Education for new regulations to implement requirements for the teacher preparation program accountability system under title II of the Higher Education Act [HEA] of 1965. The regulations are designed to hold teacher education programs accountable to that definition, and they may be in effect by the time this book is in print. For the authors of the HEA and the new regulations, and for the leader and staff of the Department of Education, the idea that 'teaching is explaining' is still common sense.