Instructors use the Grading System to assign the final grades based on the scores received by the students during the semester. The Grading System interfaces with the Student Record System (to get the class roster). The student work (assignments, tests, etc) is supplied by students and grading parameters (such as 90-100 'A', 80-89 'B', so on) are supplied by instructor. The system outputs the grade of the students, grade report for the instructor, and enters the final grade of the student in the Student Record System. Draw Context diagram for the Grading System.