Nearly half of U.S. schools are facing COVID-related staff shortages that threaten the efforts to shape programming and invest in resources to solve students' unfinished learning. Without enough teachers and support staff, students won't receive rigorous instruction, won't have access to targeted intensive tutoring to address their unfinished learning, and won't receive mental health supports and experience the positive school environments they need to thrive. High turnover also creates instability that disrupts relationships between adults and students and makes it difficult for schools to create coherent instruction and implement new initiatives. This report provides some short- and long-term actions that state and district leaders can take to address these shortages and support the most underserved students and teachers to prevent deeper, persistent inequities.