A semester-long study examined the assessment instruments and techniques currently being used by companies participating in the Wisconsin Workplace Partnership Training Program (WWPTP). Twenty-four instruments that may be categorized as either standardized tests, competency-based and criterion-reference measures, or participatory assessment instruments were being used by WWPTP sites. The popularity of standardized tests was attributed primarily to their convenience. Competency-based and criterion-referenced measures were used mainly to test for learning or mastery in specific content areas. Despite their increasing popularity in K-12 classrooms, participatory assessment techniques (including the use of portfolios) were not generally used in workplace education programs. (The following items are included in this document: 13 questions to be asked when selecting assessment instruments and procedures for workplace education programs; detailed reviews of 6 popular standardized tests; a list of 4 self-assessment instruments; and literature search information.) Contains 44 references. (MN)