Assessment of counselor performance is directly linked to assessment of counseling outcomes because counseling outcome is contingent upon counselor performance. Thus, the assessment of counseling outcome literature is the general context for the more specific literature on assessment of counselor performance. Historically, counselor performance has been assessed primarily in regard to actual counseling service rendered through assessments by counselors, clients, or external evaluators. Each of these areas is examined. Recently, non-counseling activities also have been assessed as part of the overall evaluation of counselor performance. Good assessment involves multiple measurements of whatever is being assessed. There are literally hundreds of assessment instruments and techniques available to assess various facets of counselor performance. Ironically, however, some experts have suggested that there are too many measures of counselor performance. Counselor performance assessment will be enhanced when assessments are clearly and cogently described and are used within an effective conceptual scheme. Additionally, assessments used need to fulfill accepted psychometric quality criteria. (JBJ)