First launched in April 2009, the Common Core State Standards Initiative was conceived to identify and develop college- and career-readiness standards that address what students are expected to know and be able to do when they have graduated from high school. The initiative introduced the final version of the standards in June 2010, and by September 2012, 46 states, the District of Columbia, and other U.S. territories had adopted the Common Core State Standards. States also organized themselves to design and develop next-generation assessments to measure student learning aligned with the Common Core standards, with the target of the assessments being administered by the 2014-15 school year. To support teachers in the classroom and advance the understanding and implementation of the Common Core State Standards, the Association for Supervision and Curriculum Development (ASCD) is providing a multifaceted program of information and professional learning. The work, with funding from a three-year grant from the Bill & Melinda Gates Foundation, includes: (1) Hosting statewide summits in four states; (2) Developing an online, digital application for professional development that uses math and literacy resources aligned to the Common Core State Standards; and (3) Providing technical assistance to support standards implementation. The statewide summits presented a powerful opportunity to determine educators' level of understanding about the new standards and their professional development needs and to provide information. This report outlines findings from four state summits and offers key recommendations for action.