Course numbers at Trinity University consist of four digits. The first digit indicates the level of the course: 1 or 2 designates lower division, 3 or 4 designates upper division, 5 or 6 designates graduate level. The second digit indicates the value of the course in semester hours (credit hours). The third and fourth digits identify specific courses within the subject area. Thus, a course numbered 1320 would be defined as follows: 1 3 20 (lower division) (3 credit hours) (specific course) Faculty advisors or personnel in the Registrar’s Office can assist with explanation of course number meanings.