A listing of 10 basic tasks performed by industrial education teachers, subdivided to the fourth level, comprises the document. The present listing is an expansion of an earlier publication, which terminated subdivision of tasks at the third level; the 327 third level tasks have since been treated in a rather extensive study in which 863 Wisconsin industrial education teachers and a national jury of 165 responded to the importance they attached to the tasks. All 327 tasks were validated as "not unimportant," and were expanded to a fourth level by a study committee applying four criteria to each task: (1) clarity, (2) discreteness, (3) manageability in a teaching-learning situation, (4) probability that competencies for task performance could be developed. (Author/AJ)