The report analyzes the values of the Career Development Inventory (CDI) as a means of assessing the vocational maturity of the 44 students in the Appalachia Educational Laboratory's Employer-Based Career Education (AEL/EBCE) program. The test instrument measures attitudinal and cognitive skills which correspond with program goals, and was considered sufficiently reliable and valid as a measure of vocational maturity for the purposes of evaluating the AEL/EBCE program. The results of the administration of the CDI to the students on three occasions indicate that EBCE students performed best on the cognitive section of the test, and poorest on the first of two attitudinal sections. The report concludes that compared with a tenth grade norm group, the EBCE students' entering scores on the CDI were low, and the rank of the subtest scores was the reverse of the expected order. The test also indicated the importance of a counselor with wide-ranging knowledge of vocational development theory and a variety of career experiences on the cognitive career skill development of the students. (Author/JR)