Semester Grade Calculator
This semester grade calculator multiplies each quarter and the final exam by its weight and adds them, then finds the final exam score you need.
Quarter 1 92% and quarter 2 86%, goal 90% (A) → 91.5% on the final exam
91.5%
needed on the final exam for 90% (89.5% rounds up to 90%), an A on the default scale. Your semester grade will land between 71.2% and 91.2%.
Method: a weighted average by default, or a district preset you pick · Examples: Palm Beach County (2025–26 plan) and DePaul UniversityLast verified Oct 19, 2026
Score needed on the final exam for each letter, on the default scale
| Letter | Semester grade needed | You need |
|---|---|---|
| A | 89.5% (rounds up to 90%) | 91.5% |
| B | 79.5% (rounds up to 80%) | 41.5% |
| C | 69.5% (rounds up to 70%) | 0%: already reached |
| D | 59.5% (rounds up to 60%) | 0%: already reached |
Show the math
| Weights that count | quarter 1 40%, quarter 2 40%, the final exam 20% (total 100%) |
|---|---|
| Quarter 1 | 92 × 40% = 36.8 points |
| Quarter 2 | 86 × 40% = 34.4 points |
| Points you have | 71.2 of 80 possible so far |
| Points you want | 89.5 × 100% = 89.5 points (89.5% counts as 90%) |
| Points still to earn | 89.5 − 71.2 = 18.3 points |
| Score needed on the final exam | 18.3 ÷ 20% = 91.5% |
The rules behind this final exam weight calculator, at a glance
- How the result is worked out
- Each grade × its weight, added up (a weighted average of the percents); DePaul University's handout works an example
- Final exam score needed
- Points still needed ÷ the exam's weight
- Weight of each quarter (example default, 2025–26 plan)
- 40%
- Weight of the final exam (example default, 2025–26 plan)
- 20%
- Averages of .5 and up round up to the next whole percent (example district, 2025–26 plan)
- Yes: 79.50% rounds up to 80%, a B (79.49% is a C)
- Lowest percent for an A (default scale, 2025–26 plan)
- 90% (89.5% rounds up to 90%)
Sources: DePaul University, Department of Modern Languages, The School District of Palm Beach County
Good to know
- Ask whether your school averages percents or grade points. The district preset applies its 40/40/20 split to grade points: two 89% quarters (B, B) and a 100% exam (A) give 3.2 points, a B, though the percent average is 91.2%.
- Under the district preset a strong final exam can't rescue two failing quarters. The semester needs passing grades in two of the three, so F, F and an A on the exam is an F, even though the points average 0.8, which would be a D.
Common questions
How to calculate final grade for a semester
Multiply each quarter grade and the final exam grade by its weight and add the results. With quarters at 40% and the exam at 20%, quarters of 89% and a 100% exam give 35.6 + 35.6 + 20 = 91.2%, an A. A school that averages grade points instead (the district preset in the form, 2025–26 plan) makes the same grades a B.
Sources: DePaul University, Department of Modern Languages, The School District of Palm Beach County
How much is a final exam worth in the semester grade?
It depends on your school. The calculator starts the final exam at 20% and each quarter at 40%, the example district's split (2025–26 plan), and DePaul University's example also weights its final exam 20%; change the weights to yours. In that district, a course with a state end-of-course exam counts that exam 30% of the final course grade instead.
Sources: The School District of Palm Beach County, DePaul University, Department of Modern Languages
How to calculate what you need on a final
Subtract the points you already have from the points your goal needs, then divide by the final exam's weight. In DePaul University's example, 71.95 of 80 points before a final worth 20% means a B (83) needs 11.05 more points, so 55.25% on the exam. See the weighted grade calculator.
Can a good final exam make up for two failing quarters?
Not under the district preset (2025–26 plan): to pass the semester you need passing grades in two of the three grades, so two failing quarters and an A on the final exam still make an F. When percents are averaged instead, leave the exam blank and the calculator shows the score it needs, if any.
What if my school averages grade points instead of percents?
Choose the district preset (grade points) in the form: each grade becomes a letter and its points (A = 4, B = 3, C = 2, D = 1, F = 0), the points are weighted 40/40/20 and turned back into a letter, A from 3.5 and B from 2.5. With two B quarters (2.4 points), a D on the final (59.5% or more) adds 0.2 and makes 2.6, a B.
More details
| What | Value | Source | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| How the district preset works out a semester grade (2025–26 plan) | Grade points on a 4.0 scale, then a letter | The School District of Palm Beach County | |||||||||||
| Grade-point average needed for each semester letter (district preset, 2025–26 plan) |
| ||||||||||||
| Passing grades needed to pass the semester (district preset, 2025–26 plan) | 2 of the 3 grades | ||||||||||||
| Lowest percent for a D (default scale, 2025–26 plan) | 60% (59.5% rounds up to 60%) | ||||||||||||
| State end-of-course exam weight, in courses that have one (example district, 2025–26 plan) | 30% | ||||||||||||
| DePaul's worked example (final exam worth 20%) | 71.95 of 80 points before the final; a B (83) needs 11.05 more points, so 55.25% on the exam | DePaul University, Department of Modern Languages |
The lowest grade I can get on my final: 9 common cases
The score needed on the final exam for each goal, with the default weights (quarter 1 40%, quarter 2 40%, the final exam 20%) and .5 rounded up, so a goal of 90% counts from 89.5%. The last column is where your semester grade lands with 0% to 100% on the final exam.
| Quarters 1 and 2 → goal | Needed on the final exam | Semester grade range |
|---|---|---|
| 92, 86 → 90% (A) | 91.5% | 71.2% to 91.2% |
| 88, 81 → 80% (B) | 59.5% | 67.6% to 87.6% |
| 85, 85 → 90% (A) | Out of reach | 68% to 88% |
| 80, 75 → 80% (B) | 87.5% | 62% to 82% |
| 75, 70 → 70% (C) | 57.5% | 58% to 78% |
| 95, 90 → 90% (A) | 77.5% | 74% to 94% |
| 70, 65 → 70% (C) | 77.5% | 54% to 74% |
| 65, 60 → 60% (D) | 47.5% | 50% to 70% |
| 50, 95 → 60% (D) | 7.5% | 58% to 78% |
How the grade after final calculator gets your semester grade
By default the calculator multiplies each grade by its weight and adds the results. To find the final exam score you need, it subtracts the points you already have from the points your goal needs and divides by the exam's weight. A district's grade-point rule is a preset in the form, worked through below.
semester grade = 0.40 × quarter 1 + 0.40 × quarter 2 + 0.20 × final exam; final exam needed = (G − 0.40 × quarter 1 − 0.40 × quarter 2) ÷ 0.20, where G is the goal when nothing is rounded, and when .5 rounds up the goal rounded up to a whole percent, minus 0.5 (a goal of 90 counts from 89.5)
- Multiply each grade you have by its weight: quarters of 92% and 86% at 40% each give 36.8 + 34.4 = 71.2 points.
- Work out the points your goal needs. When .5 rounds up, a 90 counts from 89.5, so an A needs 89.5 points; with no rounding it needs 90.
- Subtract and divide by the exam's weight: (89.5 − 71.2) ÷ 20% = 91.5% on the final exam.
- With every grade in, the weighted points are the semester grade: quarters of 89% and a 100% exam give 35.6 + 35.6 + 20 = 91.2%, an A.
- If the weights don't add up to 100, the total is divided by their sum instead of 100.
The district grade-point preset, worked through (2025–26 plan)
- Quarter 1: 92% is an A: 4 points × 40% = 1.6
- Quarter 2: 86% is a B: 3 points × 40% = 1.2
- Points so far: 2.8; an A semester needs 3.5
- A B on the exam adds 0.6 (3.4, a B); an A adds 0.8 (3.6, an A)
- With two B quarters instead (2.4 points), a D on the exam (59.5% or more) adds 0.2: 2.6 points, a B
An A on the final exam (89.5% or more) for an A semester grade, where averaging the percents needs 91.5%
Related: weighted grade calculator
What this doesn't account for
- A school whose rule is neither a weighted percent average nor the district preset's grade points
- Exam exemptions, incompletes and blended credit (passing a full-year course when one failed half averages out with a passed half), which the example district handles separately
- Courses with a state end-of-course exam, which the example district weights differently
- Rule changes in the example district's 2026–27 plan, which was not posted when this page was checked
Compared with similar grade calculators
| Grade calculator | How the result is worked out |
|---|---|
| Semester grade | Each grade × its weight, added up (a weighted average of the percents); DePaul University's handout works an example |
| Grade percentage calculator | Points earned ÷ points possible × 100 |
| Weighted grade calculator | Category average × weight, added together; this calculator then divides by the weights graded so far (100 at most) |
| Grade curve calculator | One rule applied to every score, such as adding the same points or raising every score by a percentage |
| Quarter grade calculator | Average of the quarter percents: add them and divide by 4 (the example district's rule) |
Sources
Verified by
Checked by CountOnTools against its official sources on Oct 19, 2026. How we verify
Before and after this step
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