Intended for those concerned with the prevention, control, and rehabilitation aspects of juvenile delinquency, this training manual is the first of a three-volume series addressed to decision making in the agencies of juvenile justice. An introductory section discusses the problem of training, along with the background and rationale of this set of curriculum materials. Following the introduction, two separate juvenile offense cases are presented and discussed from the time police first become aware of them, through probation, and to their final disposition by the court. The decisions made at each level are followed by a series of discussions highlighting some of the problems involved, and readings which are relevant to the decisions are incorporated. Related volumes are available as VT 014 826 and VT 014 827 in this issue. (SB)