California's higher education system depends heavily on community colleges. California enrolls a much larger share of recent high school graduates in community colleges than other states--but is near the bottom when it comes to enrolling in four-year colleges and universities. Transferring to four-year institutions thus plays a vital role in boosting the number of bachelor's degree holders in the state and strengthening the economic security of California workers. This study analyzes current transfer trends and identify opportunities for improving transfer rates. In recent years, statewide, regional, and local initiatives by the California Community College, California State University (CSU), and University of California (UC) systems have helped to expand transfer programs, increase access to and completion of transfer-level courses, streamline transfer pathways, and broaden dual enrollment opportunities. These efforts have yielded notable progress. Ongoing work to develop a single transfer pathway and establish dual admission options is also promising. Still, persistent equity gaps and recent declines in transfer enrollment will necessitate continued reform and collaboration among all higher education institutions to ensure that more students can reach their goal of attaining a bachelor's degree. [For the technical appendices, see ED631134. For the policy brief, see ED631141.]