A study was undertaken to determine if secondary vocational educators require additional skills to teach adult students enrolled in their classes. The technique selected to implement the study was the DACUM or "Develop a Curriculum" method for analyzing occupational competencies within the vocational education spectrum. A DACUM team produced a list of six categories and 35 teaching competencies needed by secondary teachers who teach adults. The six categories called on teachers to: promote the adult vocational program, provide for learner needs, plan for instruction, use appropriate instructional techniques, manage the adult learning environment, and provide a customized curriculum. Thirty usable validation instruments were returned by trade and industrial teachers of adults in Pennsylvania. The validation instrument gathered information on whether the competency was needed by secondary vocational teachers when working with adults; whether the competency was performed differently, in addition, or more frequently by teachers of adults; and the importance of the competency. Four competencies were found to be significantly more important to postsecondary teachers. Data indicated that teaching strategies designed for secondary students do not necessarily equate with effective adult education. Plans were made to develop learning guides on adult education teaching skills focusing on the competencies identified by the study. (YLB)