This 1985 Michigan Occupational Information System (MOIS) Application Training booklet focuses on use of MOIS in a K-12 program of career development. Introductory materials include an MOIS application training agenda and information on what is new with MOIS. The section with materials for career development in the elementary school provides an overview and suggests career development activities for these grade levels: K-2, 3-4, and 5. For each level are identified objectives, infusion areas, and activities. The section with materials for career development in grades 6-8 provides an overview and suggests three activities: a career unit to help the student get to know himself/herself, the world of work, and the way the two interact; using the MOIS; and exploring business careers. Career cluster charts are presented. The section with materials for career development in grades 9-12 provides an overview and suggests activities to integrate earlier phases of career development into a high school program to help students in career planning. The Pontiac Northern High School's Student Planning Model is briefly described, and one unit is provided. A school district example of a career development approach is described, and ideas are offered for development of high school handbooks for career development. (YLB)