This dissertation explores a multi-state analysis of why some states decertify more police officersthan others with similar or larger populations, aiming to identify best practices for decertification to effectively address misconduct and improve accountability. The study examines legislative frameworks, administrative procedures, and outcomes across U.S. states, highlighting variations, trends, and challenges in decertification practices. It also investigates the connection between successful decertification and broader police reform efforts, such as enhanced training, transparency, and community trust. Of the states represented in this research Georgia and New York decertified more officers per capita than any other state. The results of this research showed a negative correlation between lower police academy training hours and higher rates of decertification. Framed by historical context, including parallels to the Civil Rights Movement and recent calls for change following incidents like George Floyd's death, the research underscores a renewed focus on decertification. With initiatives like the National Decertification Index and new state laws, the dissertation envisions a future of greater accountability and improved public trust in law enforcement.