The change in knowledge resulting from formal training in trauma management on two different courses was examined. Seventy-four doctors and a control group were included in this prospective study over a 2-year period. They represented participants on two Advanced Trauma Life Support (ATLS) courses and four induction courses for junior doctors in Accident and Emergency (A&E) departments. The results indicate substantial benefits from both types of training. The ATLS course participants achieved better scores. Steps in constructing a simple test for the evaluation of courses are described. Standardization of approach is recommended. Assessment and audit of training in trauma management is feasible with limited resources. It may eventually be possible to measure individual clinician's proficiency against a standard scale.