This research report from the Learning Policy Institute examines successful teacher residency programs in California and their impact on addressing teacher shortages, particularly in high-need schools and subject areas. Modeled after medical residencies, these programs combine year-long clinical experience with integrated coursework and mentorship. Candidates receive financial stipends in exchange for committing to teach in partner districts, helping them meet living expenses while completing their preparation. The report identifies key features of effective residencies, including strong university-district partnerships, extended clinical placements, and intentional recruitment of diverse candidates to meet local hiring needs. It also underscores the importance of sustained state and federal investment to ensure the long-term success and scalability of these programs. This resource can inform program design and planning for institutions seeking to build or strengthen teacher residencies aligned with local workforce needs.