For the University regulations on the reconsideration of a grade, students should refer to section 1.16.1 in the 

Normally, the first line of appeal should be to the instructor. The student should, in a timely manner, request an explanation for the grade or request a reassessment. If differences surrounding the grade cannot be resolved between the instructor and the student, then the matter should be taken to the Chair of the Department, following the procedures outlined in the