The number of units for which a course is offered is a function of how much material is covered and how many minutes the class meets over the course of the semester. An Evidence or Business Association course offered for three units will cover similar topics as the four-unit course, but with less coverage. Similarly, a Professional Responsibility course offered for two units will generally cover the same material as a three-unit course, but not to the same extent. Both the two-unit and three-unit versions of Professional Responsibility fulfill our graduation requirement and the requirement of other state bars.