In postsecondary research, comprehensive approaches to student success (CASS) programs are shown to have the greatest impact on student outcomes. At the core of a CASS program is personalized and proactive coaching in which coaches actively reach out to students and meet to discuss personal and academic issues. MDRC's evaluation of one CASS program--Scaling Up College Completion Efforts for Student Success (SUCCESS)--points to a connection between frequent, high-quality coaching and credit accumulation, a key measure of college success. This issue focus summarizes exploratory findings from the SUCCESS evaluation and lessons on coaching students in CASS programs.