The purpose of this document is to present the National Center on Quality Teaching and Learning's (NCQTL) coaching model. This model has both a research base and an experience base. We refer to this coaching model as Practice-Based Coaching. Practice-Based Coaching is a model of coaching that includes three components (described below) which are associated with change in teacher practices and associated changes in child outcomes. While the components are all necessary, the way in which they are implemented may vary. This document will define Practice-Based Coaching and discuss formats in which Practice-Based Coaching can be implemented, and it will highlight and explain the components of Practice-Based Coaching. (author abstract)