Texas has made a substantial investment in teacher residencies--a research-based approach to high-quality, practice-based teacher preparation. At the direction of the legislature, the Texas Education Agency (TEA) launched this large-scale expansion of residencies to improve access to high-quality preparation and thereby help mitigate ongoing teacher workforce challenges. The research summarized in this brief demonstrates how Texas's investment has supported improvements in candidate competence, instructional preparedness, teacher preparation programming, and district hiring practices. The TEA made important design decisions in expanding residencies that helped spur these successes. The brief recommends strategic approaches to funding mentor and resident stipends and technical assistance for program design that can maintain progress in expanding this successful teacher workforce initiative.