The exact cause of teacher shortages is unknown. Some experts argue that shortages are localized, while others say that the lack of teachers is due to low unemployment and other factors. Regardless, school systems face big challenges with their teacher workforce, including finding enough teacher candidates and retaining the teachers they have, as well as filling specialized positions. These challenges require school systems to make changes to the role of the teacher. This brief identifies eight categories of strategies that school systems are using to reimagine their teacher workforce, then assesses the extent to which large and urban districts have adopted these strategies. Of the 100 large and urban school systems examined for this brief, 97 had strategies to address workforce challenges. But fewer than one in three of those districts were pursuing workforce strategies the authors would define as new or imaginative--and most focused on recruiting more candidates.