The guide contains the basic concepts and instructional materials recommended for the exploration of public service occupations at the junior high school level (grades 7-9). The materials can be used as a separate course or can be integrated into the subject areas suggested. The 17 units deal with the functioning of Federal, State, and local governments; public service workers; government health, welfare, and education services; financing of government services; environmental control; community development, law enforcement and corrections; preventing and fighting fires; regulation of people and goods crossing the national boundaries; and the government role in transportation services. Each unit contains instructional objectives, teacher information for course content, suggestions for teaching materials (resource list), teacher management activities, and individual student activities (designed for duplication) that will help to develop an understanding of the attitudes, values, and characteristics which pertain to many careers in public service. Appended are: list of resource suppliers, and a 38-page section providing pre- and post-test evaluation questions for each unit (for duplication) in various puzzle forms with answer keys. (Author/MS)