All courses are given a unique identifying number of seven characters. The first three letters indicate the curriculum area. The last four digits number the course within the department. The first digit indicates the course level. The last digit indicates the credit hour value. Courses which are less than one semester credit end in 0. Courses that end in 9 carry variable credit; the amount of credit must be declared at registration.
The letter suffix G indicates the course may be used to satisfy a general Education Core requirement. For example, consider the course ENG1043G, Freshman Expository Writing. It is offered by the English Department. It is freshman level, carries three hours credit, and meets a general education requirement.
The letter prefix "a" indicates the course is offered on an "as needed" basis or alternate years. For example, consider aHIS3023 Early National America: 1783-1850. It is offered by the History Department, is a junior level course worth 3 credit hours, and is taught on an "as needed" basis, which may be in alternate years or sometimes less. In other words, the course will be offered again 2 years after it was previously offered. If it does not meet the required enrollment (6) it will likely be canceled and may be considered again the next year.
Courses numbered 0000-0099 are not for degree credit. Courses numbered 1000-2999 are lower division courses; 1000 level courses are primarily for freshmen, while 2000 level courses are primarily for sophomores. Courses numbered 3000-5999 are upper division courses; 3000 level courses are primarily for juniors, and are not open to freshmen without approval from the instructor of the course and the academic advisor. Courses numbered 4000-5999 are primarily for seniors, and are not open to freshmen or sophomores without approval from the instructor of the course and the academic advisor. Courses numbered 6000 are open only to students admitted to the graduate program.