The paper introduces a framework concerning conceptions of teaching and learning of advanced graduate students and the trajectory of change in their conceptions following a formal course on course design and teaching. Students were enrolled in six sections of this graduate course, two offered in a 6-week format and 4 in a 13-week format. The courses were taught by three different instructors. Data were obtained from 88 doctoral students before and after the course using four questions pertaining to the meaning of effective teaching, effective learning, role of the teacher, and role of the learner. Using an open coding procedure, four conceptions were identified. These were transmitting knowledge, preparing context/managing instruction, promoting course learning, and promoting life-long learning. The generalized linear model procedure was used to conduct within and between group pre and post course comparisons. Overall, there was a significant change in response frequency ratios in all four categories across all courses, indicating a decrease in the responses in the first two categories and an increase in the frequency of responses in the last two categories. No significant differences were attributed to course type or instructor.Keywords Teaching conceptions Á Higher education Á Change in conceptions Á Thinking about teaching and learning Á Graduate teaching development Research on teaching conceptions began to appear in scholarly journals more than three decades ago. At the outset, the research was primarily focused on conceptions of school teachers (for reviews see Calderhead 1996;Fang 1996). The extension of this research to the tertiary context is more recent and the corresponding empirical literature relatively nascent. This research has mostly explored the nature and scope of conceptions of different populations including ''excellent academics'' (e.g., Andrews et al. 1996;Hativa et al.