A CCC committee was formed, consisting of physicians, nurse educators, and medical education experts. A list of 12 critical chief complaints was developed out of the work of this group. From there, a blueprint of chief complaints and corresponding diagnoses was developed for Year 1 through Year 3 of medical school, resulting in a grid of 144 diagnoses. Students work through the same chief complaints each year in a spiral manner, with different diagnoses each year. With a generous grant through the Josiah Macy Foundation , the committee’s vision for deliberate clinical reasoning practice using