When California students returned to school in fall 2019, hundreds of thousands returned to classrooms staffed by substitutes and teachers who were not fully prepared to teach. In recent years, California has experienced widespread shortages of elementary and secondary teachers as districts and schools seek to restore class sizes and course offerings cut during the Great Recession. This report examines the most recent publicly available data from the California Commission on Teacher Credentialing (CTC) and public- and restricted-use student and staffing data from the California Department of Education (CDE) to highlight the status of teacher supply, demand, and shortages, as well as teacher diversity, in California. The report details the significance of these supply and demand factors and demonstrates how these conditions vary throughout the state. In addition, the report summarizes recent state investments in addressing teacher shortages and examines potential policy solutions to mitigate ongoing shortages. While this report is based largely on data that predates the COVID-19 pandemic, it discusses the key factors now emerging as the pandemic affects California's teacher workforce. Based on research on attracting and retaining teachers, the authors have identified eight strategies that state and local agencies in California can implement in order to address ongoing teacher shortages, particularly in high-need fields and schools. These include: (1) Maintaining and expanding high-retention pathways into teaching; (2) Providing service scholarships; (3) Access to mentoring and induction programs; (4) Streamlining requirements for entry into the profession; (5) Strengthening community college and high school pathways; (6) Improving teacher compensation and working conditions; (7) Developing strong school leaders; and (8) Strengthening state educator workforce data systems. [This report was developed as a companion to an online interactive map, "Understanding Teacher Shortages in California: A District- and County-Level Analysis of the Factors Influencing Teacher Supply and Demand," which can be found online at https://learningpolicyinstitute.org/product/interactive-map-understanding-teacher-shortages-california. For the accompanying research brief, see ED610881.]