This study was conducted to determine the effectiveness of assessment tools used to counsel students who enroll in vocational education programs in Colorado. Surveys were developed and sent to the following groups: 60 high school counselors, 20 state supervisors of vocational guidance in the United States, 7 area vocational school counselors, and 14 community college counselors. Results included the following: (1) the personal interview is still the dominant tool used by counseling personnel as they work with students who enroll in vocational education; (2) 63 percent of the schools use other assessment tools--the larger the school, the more frequent the use; (3) no particular test or tests emerged as favorites; (4) the Colorado Occupational Computerized Information System (COCIS) is not used in some of the schools surveyed because of cost; (5) counselors and state supervisors were very positive about the use of tests and assessment tools; (6) because of the limited use of assessment tools reported by school counselors, no generalization nor strong comparisons can be made about either the degree of usefulness or degree of effectiveness of assessment tools used with students who enroll in vocational education. Recommendations were made to encourage more use of assessment tools by such methods as computerized central depositories for dissemination. (The appendix includes abstracts of the most frequently cited assessment tools.) (KC)