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Teachers' Ratings and Predicting Special Class Placement

known that intelligence tests contain cultural biases relative to minority racial groups. Consequently, the use of lower IQ limits for minority students would probably not impair the degree of intellectual integrity within the sample and would increase its representativeness. This study has provided information regarding the application of the LQ as a screening or selection device and underscored a major pitfall in developing operational definitions of learning disabilities. However, the study did not address the issue of whether a unidimensional ratio such as the LQ is preferable to the use of multiple predictors. Further work is needed to investigate correlations between LQs and other predictors such as teacher ratings, observation scales, and measures of perceptual processes.