The purposes of the study were: (1) to ascertain the professional competencies needed by trade and industrial teachers to be effective, as perceived by successful trade and industrial teachers, administrators, supervisors, and teacher educators; (2) to ascertain whether the teachers felt that they had the opportunity and instruction available to develop or acquire the competencies needed to teach effectively; and (3) to construct an instrument for administrators to evaluate trade and industrial teachers' performance. The 169 participants identified 164 competencies in rank order of importance; teachers, administrators, supervisors, and educators were in high agreement as to the necessary competencies and their order of importance. It was discovered that teachers have the greatest opportunity to develop or acquire those competencies to which they assigned highest ratings, while they have less opportunity to develop or acquire those competencies to which they assigned lowest ratings. The competencies were grouped into clusters of: (1) essential preservice competencies, (2) important inservice competencies, and (3) competencies to be developed when time permits. A five-page instrument for administrators and supervisors to use in rating the trade and industrial teachers' performance was developed and is included in the document. The findings of the study are presented in tables of data. (Author/AJ)