Summary.Successful innovation and change in the way medical students are prepared are notoriously difficult. The relationship between the administrative structures of the medical school and its teaching hospitals, other responsibilities of its teachers and administrators, and the intricacies of the curriculum as a system of interrelated components, mean that any real change has wide repercussions. An opportunity for evaluation of a curriculum undergoing change was presented at the University of New South Wales, when the Faculty of Medicine introduced a new 6‐year medical curriculum in 1988. The change was made to address a number of problems experienced with the old 5‐year curriculum. The Course Evaluation Committee was in a unique position to conduct an ongoing evaluation of the new curriculum, year by year, as it was being introduced. A method for obtaining feedback from both staff and students on a medical curriculum undergoing change, is described. While some sample results are presented, the paper concentrates on the advantages and disadvantages of, and our experiences with, this method. Advantages include the specificity and timing of the information collected, and the high response rate. One disadvantage was the repeated use of the same cohort of students. Some staff still perceived the evaluation process as a threat, or were sceptical about the value and validity of student feedback. Whether staff acknowledged ownership of the new curriculum also affected the use of feedb