The correlation was examined between the Officer Selection Battery (OSB) and the five areas of evaluation comprising the Army Reserve Officers Training Corps (ROTC) Basic Camp Student Evaluation Report: physical fitness, graded military skills, job performance, peer rating, and academic potential and grades. The moderating effect of the educational level of the ROTC recruit on OSB scores was also investigated. The sample consisted of 3,668 ROTC candidates who were given the OSB during basic camp in 1983 and who had scores on the ROTC Basic Camp Student Evaluation Report. The correlation between OSB and the Cooperative School and College Ability Tests was .79, supporting the OSB's validity as a measure of scholastic aptitude. However, the correlations between the OSB and the other four areas comprising the ROTC Basic Camp Student Evaluation Report ranged from .07 to .25. The correlation between the OSB and the Student Potential Index (SPI), a composite score based upon separate weightings of the five individual areas on the Student Evaluation Report, was directly related to the weighting OSB assumed in the computation of SPI. It was recommended that increasing the weight given the academic component of the Student Potential Index be considered. (Author/GDC)