Explains Subkoviak's method for estimating alternate-form reliability from one administration of a criterion-referenced test and describes computer program that handles tests for large number of examinees and allows application of Subkoviak's technique. Concludes that program is superior to other methods since user can directly check…

Initially school personnel tended to select devices with technically adequate reliability and validity. As decision making continued, technically inadequate devices were selected more often. More emphasis on the importance of technically adequate assessment devices is needed in training school professionals. (Author)