The Aurora/Joliet Neighborhood-Oriented Policing and Problem Solving Demonstration Project was funded by the Bureau of Justice Assistance and matching funds from the Illinois General Revenue. Its goal was to reduce criminal activity, thereby improving the quality of neighborhood health, reducing fear of crime, and increasing community confidence. The process evaluation aimed to document the activities involved in the implementation of the demonstration projects and used a case study approach. The impact evaluation focused on the program's effective on police personnel, the police organization, community residents, the quality of life in their neighborhoods, crime, disorder, and drug law offenses. A variety of data collection strategies were used, including self-report questionnaires, telephone surveys, crime records analysis, detailed interviews, focus group interviews, participant observations, and document analysis. Police personnel, community residents, and business owners were surveyed, and police records were analyzed. Survey instruments and outcome scales and variables