The purposes of this study were to investigate the effects of occupational information classes on the vocational interest patterns of slow learning senior high school boys, and to develop and utilize an occupational information curriculum appropriate to the intellectual level of the students involved. From a random sample of 80 slow learning 11th and 12th grade boys, two groups of 40 were composed for experimental and control purposes. Two standardized tests and a specially devised questionnaire were employed as measurement instruments, and the analysis of variance technique was used to evaluate the collected data. Results revealed that there was a positive significant difference for the experimental group, and that when occupational information was offered to this group of slow learners in a systematic manner and geared to their ability levels, the vocational interest patterns were affected. This effect seemed to remain 3 weeks after the instruction. (GEB)