What does the "U" mean after the course number?

The "U" after a course number in the Schedule of Classes identifies that the course as part of an Upper Division Cluster. You must refer to the Cluster list to find out what courses are included in each of the Clusters. These courses can also be used to complete other graduation requirements, including those in your major. However, they cannot be used to complete both the Upper Division Cluster requirement and your major requirements at the same time.