The purpose of this study was to measure the self-concept of students enrolled in "Man: A Course of Study" and compare those results with students enrolled in other social studies classrooms. Seven-hundred and twenty-one MACOS students and 736 non-MACOS students in Atlanta public elementary schools participated in the survey. The students were measured for total self-concept as a learner, motivation, task orientation, concept of themselves as problem solvers, and how they saw themselves in relation to other students in the class. The results indicate that only the dependent-variable motivation showed a significant, positive increase with the experimental group. However, when tested alone, MACOS materials significantly affected black students. Particularly, black males indicated that they were more motivated by the MACOS curriculum. Black students in the sixth grade perceived themselves as significantly better problem solvers and black males saw themselves as stronger members of a class. (Author/DE)