The report describes six projects supported by the Office of Juvenile Delinquency and Youth Development and employing community action to combat juvenile delinquency: the Mobilization for Youth on New York City's lower East Side; the Syracuse Crusade for Opportunity in Syracuse, New York; the United Planning Organization, Washington, D.C.; Houston Action for Youth, Houston, Texas; Action for Appalachian Youth, Charleston, West Virginia; and HARYOU--ACT (Harlem Youth Opportunities Unlimited--Associated Community Teams) in Harlem, New York City. The reports delineate the project genesis, the target area, modes of organization, goals and assumptions, the staff and the organization utilized, the project itself, its results, and the community reaction. Drawing on the composite experience of the projects, the last chapter cites examples of community organization issues and offers suggestions to community organizers and social planners. A 16-item bibliography is included. (MK)