||Not offered for degree credit
||Primarily designed for undergraduate freshmen, these are basic introductory courses with no prerequisites except as designated.
||Primarily designed for undergraduate sophomores, these courses may require prerequisites or, if basic courses, may be taken after a year of college study.
||Primarily designed for undergraduate juniors, these courses anticipate the completion of lower-division studies and some have specific prerequisites.
||Primarily designed for undergraduate seniors, these are usually advanced courses for students completing undergraduate studies. Most 4000-level courses have prerequisites or anticipate the background of three years of college study.
||Considered introductory in graduate-level programs and may include some of the information covered in a similarly-titled undergraduate course; also open to undergraduate seniors and undergraduate juniors with at least a 3.0 GPA
||Considered more advanced and may include prerequisite requirements; also open to undergraduate seniors with at least a 3.0 GPA
||Considered more advanced and may include prerequisite requirements
||Doctoral-level courses open only to students accepted into a CIU doctoral degree program