This mastery test is designed to accompany the introductory unit to the second-semester 12th-grade "Comparing Political Experiences" course. The 27-item multiple-choice test was developed by the National Evaluation Systems, Inc. in conjunction with the project directors to determine whether the unit objectives have been achieved. Since this unit is a summary of the political systems' concepts developed in the first semester course, the test measures student knowledge of political-system types, fundamental systems' concepts, political resources, and political activities. The test should be administered to the class as a group and then returned to the project headquarters for grading and analysis for possible revision of the student materials. (DE)