After grades are posted via the web, a student may contact the professor, furnish his or her anonymous number, and request a review. The deadline for examination review is the last day of classes of the following semester. No professor may change an examination grade unless there has been a mechanical error in computing or transcribing the score. The purpose of a review is to assist the student in preparing for future examinations, not to make any grade changes. Indeed, grades may not be changed except in case of mechanical error demonstrated to the Associate Dean. The extent and nature of the review is within the sound discretion of the individual faculty member.