A structured, time-referenced, performance examination was designed as part of the certification procedure for Emergency Medical Technicians-Ambulance in an attempt to increase objectivity and standardization. This examination is based on a model developed by the University of Southern California, School of Medicine, Department of Emergency Medicine in Los Angeles. Tasks include the treatment of chest wounds, epilepsy, fractures, head injuries, and cardio-pulmonary resuscitation. The examination procedures were pilot tested and the resulting data were analyzed using a statistical computer package. From the analyses, the desirability of the quantitative performance evaluation procedure was determined, and improvements in the rating form, to enhance predictive value, were made. A methodology for continued evaluation and review of practical performance evaluation procedure is suggested by the researchers. It is anticipated that this project will make a significant contribution towards the establishment of a National Standard Practical Examination that is objective, valid and consistent. Rating forms, scoring templates, and analyses of item performance by those passing and those failing the tests are included in this report. (Author/CTM)