My grade uses weighted categories, not total points — what changes?
Quite a lot, and it is the commonest reason a calculated grade disagrees with the gradebook. Category averaging and point pooling return different answers from identical scores: 88% homework, 74% exams and 91% labs at 20/50/30 weights averages to 81.9%, while pooling the same marks as raw points lands two points higher.
Common plus/minus convention; many schools use straight letters or different cut points.
You need 86% on the final.
That is within reach — the final is worth 25% of your grade.
🔢 Show the math
- Work graded so far covers 75% of the course; 25% is still to come.
- Points already banked: 82% × 75% = 61.5 points of the 100 available.
- To finish at 83% you still need 21.5 points from the remaining 25%.
- 21.5 ÷ 25 × 100 = 86% on what is left.
What you need, at every current grade
With a final worth 25% of your course grade and a B (83% on a plus-minus scale) as the goal, this is the score you need on the final from each starting point:
| Current grade | You need on the final | Reachable? |
|---|---|---|
| 90% | 62.0% | Yes |
| 86% | 74.0% | Yes |
| 84% | 80.0% | Yes |
| 82% | 86.0% | Yes |
| 78% | 98.0% | Yes |
| 73% | 113.0% | Not with this final alone |
Grading scales vary by institution — your school's own table and syllabus govern. Conversions shown here follow common published conventions.
Frequently asked questions
Why do the two methods disagree?
Because pooling lets a category with more points available count for more than its stated weight. With 400 homework points, 300 exam points and 200 lab points, those same percentages pool to 84.0 rather than 81.9 — homework is 20% of the weight but 44% of the points, so its strength gets over-counted.
Which method does my course use?
Read the syllabus for a table of categories with percentages beside them: that is category weighting. A syllabus listing only point values for each item, with a total at the bottom, is point-based. Canvas, Blackboard and Moodle all support both, and the gradebook settings page names the one in force.
Can I still use this page?
Yes, provided the percentage you enter is your real category-weighted average rather than points earned over points possible. Compute that average first with the weighted-grade calculator in category mode, then bring the figure here. Feeding a pooled percentage into a category-weighted course produces an answer wrong in both directions.
What if a category has no grades in it yet?
Then most gradebooks quietly redistribute its weight across the categories that do have scores, which is why a mid-term percentage can look implausibly high. What is displayed averages what exists, not the course. Check whether an empty category is being ignored before treating that number as your current grade.
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