In June 2010, the National Governors Association Center for Best Practices (NGA Center) and the Council of Chief State School Officers (CCSSO) released the Common Core State Standards[C]. The stated aim of the Common Core State Standards is to define the knowledge and skills students should achieve in order to graduate from high school ready to succeed in entry-level, credit-bearing academic college courses and in workforce training programs (Common Core State Standards Initiative, 2010a). Major questions remain to be answered about these standards, chief among them the degree to which they reflect what is necessary to be ready for college and careers. To help answer this question, the Educational Policy Improvement Center (EPIC) designed and conducted this study. It examines the degree to which the knowledge and skills contained in the Common Core State Standards are applicable to and important for postsecondary readiness. The study suggests that students who are generally proficient in the Common Core standards will likely be ready for a wide range of postsecondary courses, and the more Common Core standards in which they are proficient, the wider the range of postsecondary-level classes they will be ready to undertake. Appended are: (1) Sample Recruitment; (2) Level of Courses; (3) Demographics of the Sample; (4) Summary of ELA and Literacy Applicability Ratings; (5) Individual Ratings for the ELA and Literacy Standards; (6) Summary of Mathematics Applicability Ratings; and (7) Individual Ratings for the Mathematics Standards. Individual chapters contain footnotes. (Contains 88 tables and 56 figures.)