This research report from the Southern Regional Education Board in partnership with Vanderbilt University examines how teacher preparation pathways affect early-career retention across Kentucky, Tennessee, and Arkansas. The report combines findings from two studies; the first study analyzed state administrative and survey data of preparation pathways, while the second study interviewed more than 30 early-career teachers about their preparation experiences. Key findings include that non-traditional preparation routes are growing and tend to attract a more diverse group of candidates, but traditional pathways are associated with stronger teacher retention. Early exit factors include unsustainable workloads, insufficient support, student behavior challenges, and low pay drive early exit, while drivers of retention highlight positive student relationships and collegial support. The report concludes with implications for strengthening both traditional and nontraditional preparation programs, improving mentoring and induction support, developing targeted retention strategies for resource-challenged schools and rural communities, and using data to guide ongoing policy decisions.