A weighted grade is a course grade where each category of work (homework, quizzes, tests, projects) counts for a set percentage of the total, so some kinds of work move your grade more than others.
This is different from a weighted GPA, which gives bonus points for harder classes. Category weighting happens inside one class.
The formula
Course grade = (category 1 average × weight 1) + (category 2 average × weight 2) + …
The weights add up to 100%.
Worked example
A syllabus says homework 20%, quizzes 30%, tests 50%. A student’s averages:
| Category | Average | Weight | Contribution |
|---|---|---|---|
| Homework | 95 | 20% | 19.0 |
| Quizzes | 82 | 30% | 24.6 |
| Tests | 78 | 50% | 39.0 |
| Course grade | 82.6 |
The raw average of the three categories is 85, but the heavy test weight pulls the real grade down to 82.6. The grade calculator handles any number of categories, and the average grade calculator works when every assignment counts equally.
Empty categories
Early in a term, some categories have no scores yet. Most gradebooks then spread the weight across the categories that do. With no tests yet, the student above would have (19 + 24.6) ÷ 0.5 = 87.2. That’s why grades often slide once the first test is entered.
Where you’ll meet it
Almost every middle school, high school and college syllabus lists category weights in the first week. The biggest single weight is often the final exam, which is why students check the final grade calculator before exam week. See final grade for the math.