This Microsoft PowerPoint on Early Childhood Professional Development Constructs was presented at the Leadership Symposium of the National Center for Research on Early Childhood Education in February, 2008. The focus is on common measurement approaches and alignment of goals and data across professional development, quality rating systems, and early childhood educator competencies. It is explored whether the core constructs of education, training, and credentials function to predict quality and child outcomes. Areas that need to be addressed are listed for research and systems.