Examinations, recitations, and reports are required within the semester at the discretion of the instructor. In addition, a final examination is given in most courses during the final examination week of each semester. Students absenting themselves from a scheduled examination without justifiable cause will receive a failing grade for the examination. A scheduled examination is any examination that is announced by an instructor in advance of the class meeting when the examination is administered. A supplementary examination may be taken for a justifiable cause approved by the instructor of the course.