Students who were candidates for teacher certification at the University of Wisconsin-Platteville were administered the Bogardus Social Distance Scale to determine the effect of a state mandated human relations course on their attitudes toward ethnic and racial groups. The scale was administered to these students and three control groups which included general underclassmen, non-education major seniors, and education major seniors. The scores of these groups were compared among the groups and also with a 1956 survey by Emory Bogardus. A high degree of agreement was found between the student samples and the Bogardus sample. Among the student samples two patterns emerged. First, mean scores declined between a sample of one underclassmen and one of non-education major seniors. Second, mean scores declined between the underclassmen sample and the human relations pretest sample, declined further between the human relations pretest and human relations posttest, but then increased between the human relations posttest and the senior education major sample. A high degree of agreement was found among the scores of all of the student samples. An analysis of variance of the means for the racial and ethnic groups included in the scale suggested that the human relations program does produce measurably lower social distances among its students. (Author/APM)