"A State Policy Landscape: K12 Climate Action" looks at key areas where states have policies that can support schools in moving toward climate action. This report highlights opportunities for growth by focusing on state-level policy in the following focus areas: (1) mitigation; (2) adaptation; and (3) education. In this report, the authors examined state policy in all 50 states and the District of Columbia. Primary and secondary sources were utilized, including, but not limited to: legislation, regulations, mitigation settlements, state standards, academic papers, reports, and news articles. The findings show that some states have started to work toward climate action, but there is more work to be done. Policymakers, school leaders, and educators can learn from the policy initiatives currently occurring across the country. The differences across states, the need to support schools in transitioning to environmental sustainability, and leadership from America's youth create an opportunity to further advance policy to support schools in addressing climate change. [Cover title varies: "State Policy Landscape 2020: K12 Climate Action."]