This module, the fourth of four units about vocational competency measurement, is module 20 in the Vocational Education Curriculum Specialist series. The purpose stated for the document is to help in the validation of a competency test after it has been developed, in the determination of how test results will be reported, and in the consideration of ways of setting standards for passing or failing the test. Content is organized into three sections, each of which focuses on one goal and two or more objectives. The first section discusses possible approaches for determining the content validity of a competency test. It also comments on predictive validity and maintaining test validity. Section 2 considers possible uses for vocational competency tests and how test results can be reported in accordance with the intended use. The module concludes with the question of how to set standards for passing or failing a test. Each section concludes with individual study activities, discussion questions, and group activities. Self-check items and possible responses to them are appended for use as a pretest and review of the module content. (YLB)