Weighted Category Grade
Overall course percent and letter grade from a list of categories (percent and weight).
Example
You enter
- Categories (pct/weight, e.g. 92/20, 85/30, 78/50) earned 92, possible 100, weight 20; earned 85, possible 100, weight 30; earned 78, possible 100, weight 50
You get
- Overall grade 82.9
Checked against published worked examples from: Weighted-mean arithmetic + standard US letter bands.
Details, formula, and sources
ScopeNormalized by the sum of weights for a partially-complete term.
Formula or tablecategory% = earned/possible*100; overall = sum(category% * weight) / sum(weight). Letter bands A >= 90, B >= 80, C >= 70, D >= 60.
Source and editionPure weighted-mean arithmetic; standard US letter bands, by name; the instructor's gradebook governs.
Free accessPure public algebra; bands vary by school.
What governsEstimate. AHJ and licensed professional govern.
API field namescategories, overall_pct
- Letter bands A >= 90, B >= 80, C >= 70, D >= 60 (standard US)common gradebook