The Kaufman Assessment Battery for Children (K-ABC) and the Stanford-Binet: Fourth Edition (S-B:FE) were administered in counterbalanced order to a sample of 20 middle-class preschool children (11 males and 9 females) attending the Early Childhood Preschool Center located in a suburban area of a large midwestern city. Subjects' mean age was 4 years and 9 months. All children attending the center had been identified as at-risk for impeded future academic progress. Potentially handicapping conditions included both physical and educational difficulties. Subjects' global scale scores as well as the K-ABC supplementary scales (as proposed by R. Kamphaus and C. Reynolds) and the S-B:FE factor scores (as proposed by J. Sattler) were compared. The K-ABC Mental Processing Composite and the S-B:FE Test Composite produced a correlation of 0.79, while the K-ABC Global Intelligence Composite and the S-B:FE Test Composite correlation was 0.81. Although significant correlations were present for scales on the two tests that are purported to measure memory, non-verbal reasoning, verbal skills, and achievement, there were significant differences in global scale means of the two tests. The utility of the proposed supplementary scales and factor scores with at-risk preschool students are discussed. Three tables present study data. (Author/SLD)