Percentile Scale
Use the percentile scale when a subject’s score must be interpreted in terms of a percent of the normal population surpassed by the subject. For example, if the subject’s score is at the midpoint (50 percentile on the scale), it means that the score made by a subject was better than 50 percent of the normative population. Other percentile points are interpreted in a similar fashion. The instructions for scoring appear in the Normative Data and Scoring section.