A four-digit number designates each course. The first digit denotes the level of the course. Course numbers beginning with the number one (1) are freshman-level courses, while those beginning with the number two (2) are normally considered sophomore-level courses. The second digit indicates the value of the course in semester hours in all courses except Vocational Nursing. The third and fourth digits are used to identify the sequence or designation within a department. Beginning fall 1992, Navarro College joined with other two-year and four-year colleges in Texas to adopt a common course numbering system. The purpose of this system is to assist students who are transferring between participating institutions.