A study was conducted to assess the relationship of competencies taught in the Wisconsin Vocational-Technical and Adult Education system Data Processing (DP) Diploma Programs to required on-the-job skills. DP graduates, their employers, and instructors were surveyed in order to obtain a comparative evaluation of the program, and a sample of employers and graduates were interviewed. Respondents were asked to rate a list of DP competencies in terms of importance on the job and adequacy of graduates' preparation. Results indicated: (1) keypunching and associated activities, social behavior, and verbal communications were most important on the job while computer languages were least important; (2) keypunching was ranked highest in terms of adequacy of preparation while computer languages were ranked lowest; (3) a high degree of agreement between respondent groups existed regarding competencies of importance on the job and preparation in school; (4) employers indicated a definite need for the skills acquired by DP graduates; and (5) respondents were generally very positive about the DP program, indicating it was basically well-structured and well-taught. Recommendations were made concerning skills needing more emphasis in the program and the provision of greater lab time and hands-on experiences. Survey instruments and related materials are appended. (JDS)