This policy brief outlines the Common Core implementation plans for 15 states, including the professional development and resources/tools--such as instructional materials, toolkits, frameworks, crosswalks, and curriculum guides--that each state is providing. The authors suggest that supplemental resources like McREL's Common Core…

Improving teacher preparation is critical to long-term improvement in teacher quality. More than 200,000 new teachers enter classrooms each year. Increasing student enrollment, the retirement of baby boom generation teachers, and high attrition in their first five years (between 40 and 50 percent of new teachers leave the profession) have…