All states identify schools most in need of improvement by using school accountability systems and other metrics. State improvement strategies range in intensity from general technical assistance to alternative governance for identified schools or districts. This 50-State Comparison provides research into the K-12 school improvement policies in all 50 states and the District of Columbia. This interactive resource provides information identified in statute, regulation and state Every Student Succeeds Act (ESSA) plans as of September 2022. The following hyperlinks to data tables are included: (1) Improvement Categories; (2) Improvement Plans and Needs Assessments; (3) Strategies and Supports; (4) Alternative Governance; (5) More Rigorous Interventions; and (6) All data points for all states. Key takeaways are also listed.