Through the "Strengthening Statewide College/Career Readiness Initiative" (SSCRI), Southern Regional Education Board (SREB) has collaborated with states on state policy goals and actions needed to improve high school students' academic readiness for postsecondary study and reduce the need for remedial work. SREB created and implemented an action agenda comprised of six components that states can follow to improve students' college and career readiness: statewide readiness standards, assessment, specialized curriculum including transitional courses, teacher development, postsecondary application of the standards, and school and college accountability. This report describes progress made in Florida, Kentucky, Texas, Virginia, and West Virginia on one component of the college-readiness model agenda: the design and delivery of transitional courses in reading, writing and mathematics for high school seniors who are not on track to be college- or career-ready by the end of 11th grade. America's states and schools face significant challenges to improve college and career readiness for all students before they leave high school. Now that most states have adopted more rigorous standards closely aligned with college readiness, the focus should be on identifying students who are not prepared to be successful in first-year college-level courses or the workplace and offering alternative courses in their junior or senior year that will strengthen their chances for success. This report presents details and observations about the approaches taken by five states involved with the "SSCRI" to develop and implement senior-year transitional courses in English and mathematics. Finding and recommendations are presented. The following are appended: (1) Florida State Profile; (2) Kentucky State Profile; (3) Texas State Profile; (4) Virginia State Profile; and (5) West Virginia State Profile. [This report was written with assistance from Cheryl Blanco and Megan Root. The report was edited by Alan Richard.]