Across the country, districts and schools are struggling to meet the growing demand for qualified teachers. Indeed, there are some subjects--such as mathematics, science, and special education--in which nearly every state is experiencing a teacher shortage. As a result, states often turn to underqualified teachers to fill the vacuum, a problematic and often temporary solution because these teachers are less effective on average and more likely to leave the field, especially in highneed schools in which they are disproportionately placed. Such attrition is costly to states and further undermines student achievement and school improvement efforts. Fortunately, research offers insights on how to attract, develop, and retain a strong and stable teacher workforce. This report builds on that research by focusing on six evidence-based policies that states are pursuing to address their teacher shortages while also strengthening their educator workforce. This report examines all submitted and approved Every Student Succeeds Act (ESSA) state plans, as well as targeted reviews of recent, relevant state legislation; publicly available program documents; and administrative data. In addition, this report includes a detailed exploration of the comprehensive approach taken by Washington state that leverages a number of evidence-based policies in tandem to address teacher shortages while also improving its educator workforce.