One approach of the peace movement has been the development of peace education course in schools and universities. This paper is an evaluation of the effects of one such course on the beliefs and attitudes of students. Two evaluations were done, one in the spring of 1988 and one in the winter of 1990. University students enrolled in a course titled, "National Security: Its Science and Technology," were assessed before and after the term and compared to a control group of students. Differences were found between the 1988 and 1990 groups of students, possibly due to the shift in world power positions. The primary effect of the course was to increase students' cognitive differentiation among related issues such as nuclear weapons, nuclear power, war, and SDI (Strategic Defense Initiative). Significant patterns of differences also were found between male and female students. A 7-item list of references is included. (Author/DB)