A training program was developed to teach narcotic supervisors the proper way of field testing drugs purchased by undercover officers. The instructional system design model followed for this project was the Interservice Model of Systematic Design of Instruction, which consists of five phases (analysis, design, development, implementation, and evaluation). During the analysis phase, the designer used first-hand experience and discussions with undercover officers, laboratory personnel, and supervisors to determine the need for such training. A job task analysis showed that most drug-related narcotic cases were not field tested. Objectives were developed and the use of role plays and videotaping was considered for training. A training seminar booklet and a mock video of the training were produced and disseminated to appropriate training directors to examine. After a series of one-on-one and small group trials, the project was implemented in January 1991. The initial training appeared to be very successful; commanding officers of the narcotic divisions provided tremendous support. Although hesitant at first, participants felt the training was excellent and worthwhile. The formative evaluation included one-on-one, small group, and pilot tests. The reaction and learning results seemed to be quite positive. (Appendixes include the task analysis, performance checklist, questionnaire, and 15 references.) (YLB)