All grades except I (Incomplete) and IP (In-Progress) are final when submitted to the Office of the Registrar by the instructor subject to the provisions given in the current UCSB General Catalog. Thereafter, an instructor may report a correction of a grade only in the case of clerical or procedural error. An instructor also may change a grade in the quarter following that in which the original grade was received if the basis for the change is found in work previously accomplished in the course as a part of the student’s regular participation in class activity. However, such changes must not create inequities to others whose grades remain unaltered. No final grade (except I) may be revised by re-examination, and no letter grade may be changed to or from P/NP or S/U.