Reports of four Project EDNEED (Empirical Determination of Nationally Essential Educational Data) conferences are contained in this fourth volume of a five-volume final report: The national conference, state directors' mini-conference, mini-conference for local employer representatives, and the local administrators' conference. The purposes of the conferences were to (1) review and critique the questions and information elements in the "EDNEED Classification" document, (2) identify issues and problems associated with design, inauguration, and operation of a nationwide system of vocational education information, and (3) provide recommendations as to how the issues and problems identified can be resolved. Conference procedures, findings and recommendations, agendas, discussion guides, and participant lists are included for each conference. (TA) .