The COMPSTAT (Compare-Statistics) system was developed by the New York Police Department in 1994 and is credited with having had a significant impact on reducing serious crime in the CNY. COMPSTAT is recognized internationally as a highly successful tool, incorporating accurate methods of criminal intelligence analysis and streamlining law enforcement management processes, including the assignment of power to local district commanders. Broadly speaking, COMPSTAT can be described as a series of processes used for the collection and analysis of criminal intelligence data which in turn assist commanders in developing effective strategies and tactics to combat crime. The effective reduction of crime and the lowering of the quality of life are of paramount importance The primary importance in the COMPSTAT model is and is one of the four fundamental principles of the COMPSTAT paradigm. This essay will examine the impact that the implementation of COMPSTAT has had, specifically the process of data-driven problem identification and assessment, and model it with respect to the police department in Newark, New Jersey, USA. By doing so it will determine what changes in strategy, structure and operations have taken place as a result of the implementation process. The COMPSTAT Process and Data-Based Problem Identification and AssessmentCOMPSTAT is regularly described as a management accountability process that is a multi-tiered process and dynamic approach to crime reduction and management of staff and resources. The COMPSTAT Data-Driven Problem Identification and Assessment process (now called DDPIA), uses advanced geographic information systems (geocoding) and software to extract, track, and analyze data related to criminal activity, such as Part I and Part II...... middle of sheet......12 .A, Braga & D, Weisburd. “Police Innovation and Crime Prevention: Lessons Learned from Police Research Over the Last 20 Years.” Paper presented at the National Institute of Justice (NIJ) Policing Research Workshop: Planning for the Future, Washington, DC. 2006, p. 22.P, McDonald & S, Greenburg & W, Bratton. “Police Operations Management: Implementing the NYPD Crime Control Model Using COMPSTAT.” Belmont, CA: Wadsworth Press. 2001, p. 5.J, Willis & T, Kochel & S Mastrofski. “The Co-implementation of Compstat and Community Policing: A National Evaluation.” Center for Justice Leadership and Management. George Mason University. 2010. page. 55.H, Goldstein. “Problem-Oriented Policing.” McGraw-Hill Publishing. 1990. p. 27.ibid.J, Willis & T, Kochel & S Mastrofski. opt. cit. P. 57