Validation studies were conducted on nine revised aptitude areas of the Army Classification Battery (ACB) to determine whether ACB scores provided an equitable indication of the qualifications of blacks and whites for training in major groups of Army jobs. The aptitude areas were: combat, field artillery, electronics repair, operators and food, surveillance and communications, mechanical maintenance, general maintenance, clerical, and skilled technical. The validity of these aptitude scores was compared by a three-step analysis, to job training scores (final course grades) for 12,355 whites and 1,772 blacks. (1) Comparison of ACB scores of whites and blacks showed sizeable differences. (2) Aptitude area scores correlated highly with counterpart training scores for both races. (3) For six of the eight major job areas, both white and black trainees were selected appropriately for their job categories. It was concluded that the scores were valid enough to justify their uses in identifying more effective personnel; furthermore, a regression analysis indicated that ACB scores have equivalent meaning for both races. (Author/CP)