The primary purpose of this paper is to provide a response to the timely papers by Glass (1978) and Burton (1978)'. My comments will be limited mainly to the issues and technology associated with the use of cut-off scores (or standards, in the terminology of Glass and Burton) with criterion-referenced tests in the process of instructional decisionmaking. It is this particular application of cut-off score technology which has received the most use since there exist thousands upon thousands of school-based, objectives-based instructional programs in operation around the country. Most (if not all) of these programs make extensive use of criterion-referenced tests to provide data for instructional decisionmaking. To make instructional decisions (i.e., assign examinees to mastery states), cut-off scores must be determined. The remainder of the material presented in the paper is organized into four sections: Criterion-Referenced Testing, Uses of Cut-Off Scores in Instructional Decisionmaking, Consideration of the Glass and Burton Papers, and Some Suggestions for Setting CutOff Scores.