Abstract: This study investigated gender differences in the achievement and retention of Nigerian students exposed to concepts in Social Studies through multi-media packages. The purpose was to find which of the sexes would achieve or retain better than the other having been exposed to Social Studies through multi-media packages. The study was quasi-experimental using 160 JSS 2 students randomly selected into 3 experimental and one control groups. A 30-item test designed and validated by the researcher and some professionals was used to collect data which were analysed using ANCOVA and Multiple Classification Analysis. Two hypotheses were formulated and tested and the results showed that none of the sexes achieved significantly better than the other but that the female students retained significantly more than the male students. Based on the findings, some recommendations were made.