An evaluation of the Michigan Occupational Information System (MOIS) was conducted. (The MOIS is a system designed to provide reliable and current career information organized in a readily accessible system for individuals involved in career exploration and decision making.) Three types of survey instruments (site, staff, and client surveys) were designed by a private evaluation agency and the MOIS Evaluation Advisory Committee to obtain information on reasons for using MOIS, the perceived and actual career information needs of clients, and staff and client overall rating of MOIS. Surveys were administered to staff and clients at 364 sites including libraries; elementary, secondary, and postsecondary schools; and vocational rehabilitation offices. Both staff and client survey respondents indicated that MOIS fulfills its intended purpose and is meeting the career information needs of its clients. Respondents indicated a need for the following: updating MOIS information early in the school year, increased promotion of MOIS services, MOIS application training workshops, assessment of the reading level of MOIS material, devising a method by which agencies are made aware of information within MOIS that is relevant specifically to them, and evaluation of MOIS sites. (An executive summary precedes the evaluation report; and an overview of the evaluation workplan and survey instruments are appended.) (MN)