The purpose of this publication is to review each of the Vocational Evaluation and Work Adjustment Association sample testing standards as well as to provide insight and understanding into the underlying purposes of the guidelines. The first of three sections focuses on those standards designed to insure that a work sample actually measures what it purports to measure and is representative of real competitive worker skills. Section 2 describes the requirements which define what constitutes work sample standardization. Specific requirements discussed are job analysis relationship; prerequisites; work sample purpose; materials and equipment used; test preparation and layout; instructions; time, error, and scoring instructions; and instructions for interpreting scores. The final section expounds upon the standard which requires work samples to have appropriate competitive or industrial norms. (LRA)