A representative sample of California school psychologists was surveyed to determine the extent of the use of the Adaptive Behavior Scale and the relationship between training in the use of the scale and perceptions of the efficacy of its measures. A large majority of psychologists had used the scale two or fewer times, though 30-45% had been introduced to the scale in assessment workshops, trained others, or particpated in special courses. In general, the more extensive the training, the more positive the judgment of the psychologists about the utility of the adaptive behavior assessment the scale provides. The outcomes of evaluations which used the Adaptive Behavior Scale, from a school district in which psychologists reported being trained, were analyzed. It was concluded that the information from the Adaptive Behavior Scale contributed important diagnostic information to the evalution and placement process. It was also noted that the Spanish-surnamed children always had the lowest scores on the Physical Development domain, indicating the possibility of sensory and motor handicaps. (Author/BW)