The clinical clerkship in Canadian Medical Schools is intended to provide senior medical students with opportunities to gain practical knowledge of clinical medicine, develop technical skills, learn to use judgement and experience first-hand clinical decision making. Assessment of rotations in internal medicine were undertaken in order to understand more fully the nature of medical clerkship experiences. We found that medical clerks in our programme were exposed to a high proportion of undifferentiated problems and an adequate case mix. They performed a wide range of technical procedures. There were, however, certain gaps in the clerks' experiences both in the specialty areas, and in therapeutic and technical procedures. Recognition of these gaps in the clerkship experiences suggests that further deliberation of goals and objectives is required and issues of achievement of competencies need to be addressed.