https://catalog.purdue.edu/content.php?catoid=15&navoid=18634#grades-and-grade-reports(B Semester Grades, Number 4)

For Incomplete Work, (University Senate Document 83-8, March 26, 1984; revised by University Senate Document 97-7, April 27, 1998, and University Senate Document 00-5, March 19, 2001)

A grade of incomplete is a record of work that was interrupted by unavoidable absence or other causes beyond a student's control, which work was passing at the time it was interrupted and the completion of which does not require the student to repeat the course in order to obtain credit.

The incomplete grade is not to be used as a substitute for a failing grade. The incomplete may also be used to delay the awarding of a grade in courses (e.g., self-paced courses, mastery courses, and practicums) the completion of which normally requires one semester, but the structure of which allows specified additional time.

An instructor may consult with the dean of students to determine whether the circumstances may warrant a grade of incomplete. When an instructor reports a grade of incomplete, he/she shall file in the departmental office registrar's form 60 stating the reasons for the grade and what is required of the student to achieve a permanent grade. The instructor shall also indicate the grade the student has earned on the work completed, and the weight to be given to the remainder of the work in computing a final, permanent grade.

The student must achieve a permanent grade in the course no later than one year after the incomplete is given, or the incomplete grade will revert to a failing grade. (See section F.)   A student will not be permitted to enroll in a course in a future semester for a course in which they have a current I, PI, or SI grade.

Appropriate incomplete grades for courses are as follows: I: Incomplete; no grade; the student was enrolled in a credit course under the regular grade option. PI: Incomplete; no grade; same as I except that the student was enrolled in a credit course under the pass/not-pass option. (See Section C.) SI: Incomplete; no grade; same as I except that the student was enrolled in a zero credit course.