The Children at Risk (CAR) Program was a comprehensive, neighborhood-based strategy for preventing drug use, delinquency, and other problem behaviors among high-risk youth living in severely distressed neighborhoods. The goal of this research project was to evaluate the long-term impact of the CAR program using experimental and quasi-experimental group comparisons. Experimental comparisons of the treatment and control groups selected within target neighborhoods examined the impact of CAR services on individual youths and their families. These services included intensive case management, family services, mentoring, and incentives. Quasi-experimental comparisons were needed in each city because control group youths in the CAR sites were exposed to the effects of neighborhood interventions, such as enhanced community policing and enforcement activities and some expanded court services, and may have taken part in some of the recreational activities after school. CAR programs in five cities -- Austin, TX, Bridgeport, CT, Memphis, TN, Seattle, WA, and Savannah, GA -- took part in this evaluation. In the CAR target areas, juveniles were identified by case managers who contacted schools and the courts to identify youths known to be at risk. Random assignment to the treatment or control group was made at the level of the family so that siblings would be assigned to the same group. A quasi-experimental group of juveniles who met the CAR eligibility risk requirements, but lived in other severely distressed neighborhoods, was selected during the second year of the evaluation in cities that continued intake of new CAR participants into the second year. In these comparison neighborhoods, youths eligible for the quasi-experimental sample were identified either by CAR staff, cooperating agencies, or the staff of the middle schools they attended. Baseline interviews with youths and caretakers were conducted between January 1993 and May 1994, during the month following recruitment. The end-of-program interviews were conducted approximately two years later, between December 1994 and May 1996. The follow-up interviews with youths were conducted one year after the program period ended, between December 1995 and May 1997. Once each year, records were collected from the police, courts, and schools. Part 1 provides demographic data on each youth, including age at intake, gender, ethnicity, relationship of caretaker to youth, and youth's risk factors for poor school performance, poor school behavior, family problems, or personal problems. Additional variables provide information on household size, including number and type of children in the household, and number and type of adults in the household. Part 2 provides data from all three youth interviews (baseline, end-of-program, and follow-up). Questions were asked about the youth's attitudes toward school and amount of homework, participation in various activities (school activities, team sports, clubs or groups, other organized activities, religious services, odd jobs or household chores), curfews and bedtimes, who assisted the youth with various tasks, attitudes about the future, seriousness of various problems the youth might have had over the past year and who he or she turned to for help, number of times the youth's household had moved, how long the youth had lived with the caretaker, various criminal activities in the neighborhood and the youth's concerns about victimization, opinions on various statements about the police, occasions of skipping school and why, if the youth thought he or she would be promoted to the next grade, would graduate from high school, or would go to college, knowledge of children engaging in various problem activities and if the youth was pressured to join them, and experiences with and attitudes toward consumption of cigarettes, alcohol, and various drugs. Three sections of the questionnaire were completed by the youths. Section A asked questions about the youth's