How it works
How to calculate it
Multiply each term grade and the final exam by its share of the semester, add the three products, then divide by the total weight. Most U.S. high schools weight the two quarters at 40% each and the semester exam at 20%.
Semester grade = (T1 × w1 + T2 × w2 + exam × w3) ÷ (w1 + w2 + w3)
Worked example
Example calculation
Quarters of 88% and 82% at 40% each, with a 91% final exam at 20%, give (88×40 + 82×40 + 91×20) ÷ 100 = 86.2%.
Use the calculator above to substitute your own numbers. Results update immediately.
Before you rely on the number
Things worth checking
- Weights vary widely. Some schools use 45 / 45 / 10, and some drop the exam entirely for students above a cutoff — check the student handbook before trusting the default.
- The exam field can be left at the term average to preview a “no surprises” semester grade, then lowered to test the worst case.
- To work backwards from a target semester grade to the exam score you need, use the final grade calculator.
- Courses graded by category rather than by term belong in the weighted grade calculator.
Common questions
Semester Grade Calculator FAQ
What if my school does not give a semester exam?
Set the exam weight to 0. The calculator then averages the two terms using the weights you entered.
Do the three weights have to total 100%?
No. GradeKit divides by the total weight you entered, so 45 / 45 / 10 or any other split works.
Can I use this for a trimester course?
Yes. Enter the first two trimesters in the term fields and the third in the exam field, then set the weights your school uses.