A study was conducted to determine what is being done to develop leadership capabilities of first-line supervisors. Data was collected through interviews, examinations of company training literature, and primary resource materials at 125 manufacturing plants in fifty states which, in the aggregate, employ more than 155,000 production workers and have about 10,660 first-line operating supervisory personnel. The principal conclusions are the following: (1) The major broad and specific objectives for teaching leadership/management attitudes, skills, and techniques are being achieved in the programs examined; (2) some specific supportive leadership capabilities and functions (communicative skills, planning, organizing, and controlling) are being taught less successfully than overall objective priorities seem to warrant; (3) attitudes are receptive to the development of ongoing, escalating courses which are natural extensions of existing programs; (4) because planning, organizing, and controlling functions have much higher curricular objective priorities than apparent achievement strengths, some study of delivery systems for teaching these basic functions represents an educational and training opportunity; and (5) research associates who conducted field interviews have gained experiences to enrich their classes. (The appendix includes the interview questionnaire and lists of the research associates, plants, consultants, and resource materials.) (EM)