Changing Expectations for the K-12 Teacher Workforce: Policies, Preservice Education, Professional Development, and the Workplace explores the impact of the changing landscape of K-12 education and the potential for expansion of effective models, programs, and practices for teacher education. This report explores factors that contribute to understanding the current teacher workforce, changing expectations for teaching and learning, trends and developments in the teacher labor market, preservice teacher education, and opportunities for learning in the workplace and in-service professional development.