The challenges of the COVID-19 pandemic led districts and schools to experiment with new staffing and support structures to meet students' academic, emotional, and physical safety needs. Shortages of teachers and substitute teachers, challenging conditions for student teaching, and early retirements all became pressing issues during this time. Region 1, Region 9, and the Center on Great Teachers & Leaders (GTL Center) partnered with colleagues at state education agencies (SEAs); Region 12; and key stakeholders in Colorado, Illinois, and Vermont to pause, take stock of the rapid changes, and discuss challenges and solutions. The result was a Cross-State Collaborative on Generating Solutions to COVID-Specific Educator Shortages, which included five sessions in early 2021, with the goal of discussing strategies to address educator shortages related to the COVID-19 pandemic and facilitate cross-state problem solving. Topics for these sessions included the following: (1) Leveraging Educator Preparation Programs and Engaging Teacher Candidates to Fill Learning Gaps; (2) Understanding How Addressing Substitute Teacher Shortages May Exacerbate Equitable Access to Quality Teaching; (3) Innovative Teacher Staffing Models; (4) Preventing Teacher Attrition and Early Retirement; and (5) Investing in Teachers First: A Discussion of New Federal Opportunities. Along with key takeaways, this document consists of a synthesis of the session summaries. Each summary provides the following: (1) Session Takeaways; (2) News Highlights and Articles; and (3) Resources.