This Brief summarizes the final report from the "Accelerating Student Success through Credit-Based Transition Programs" study. That study, which was initiated by the U.S. Department of Education, Office of Vocational and Adult Education (OVAE), examined the ways that CBTPs may help middle- and low-achieving students enter and succeed in college. The final report presents findings from case studies of five diverse CBTPs. The sites included a middle college high school in California, an International Baccalaureate program in Minnesota, a dual enrollment program in New York City, a technically-oriented dual enrollment program in Iowa, and a Tech Prep program in Texas. [This Brief was drawn from a longer report of the same title.]