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Final Grade Calculator

How to calculate Final Grades

Determining what score is needed on the final exam to achieve your desired score for the course

  1. First, you need to know three things:
  • Your current course grade
  • Your desired course grade
  • The percentage weight applied to the final exam

For this example we will use 88% for your current course grade, 90% for your desired course grade, and 30% for the percentage weight of your final exam.

  1. Determine the weight of your current course grade by subtracting the final exam weight percentage from 100%. If your final exam is worth 30% of your course grade then the rest of the course is worth 70% of your grade:

100% (Total course) – 30% (Final Exam)= 70% (current grade in course)

  1. Multiply your current course grade by its weight as determined in step 2:

current course grade X weight of current grade in course (as a decimal)

If your current course grade is an 88% and your current course grade is weighted 70% then:

            88 X .7 = 61.6

This is the weighted value of your current grade (CG).

  1. Subtract this number from step 3 (the weighted value of your current grade) from your desired grade:

  desired grade (DG) – weighted value of your current grade (CG) (see step 3)

If we desire a 90%, then:

            90 – 61.6 = 28.4

  1. Divide this number from step 4 (the difference between DG and CG), by the weight of the final exam grade (as a decimal):

            desired grade (DG) – weighted value of your current grade (CG)

weight of the final exam (as a decimal)

In our example, it would be calculated as follows:

              (90-61.6)      which is equal to   28.4   which equals 94.7.

This is our grade needed on the final exam: 94.7%.

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