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 evaluation assessed the processes involved in planning and implementing neighborhood-oriented policing strategies and estimate the internal and external effects of these strategies, including their impacts on police officers, police management, residents in the target neighborhoods, and rates of crime-related problems. The process evaluation used a case study approach to examine the programs during their first and last 3 months. The impact evaluations gathered from multiple sources. Data collection strategies included self-report questionnaires, telephone surveys, archival data analysis, crime records analysis, detailed interviews, focus group interviews, participant observations, and document analysis. Footnotes, tables, study instruments, and outcome scales and variables