# How to Calculate My Class Grade

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#### TL;DR (Too Long; Didn't Read)

If your teacher doesn't use weighted averages, you can calculate your class grade with the simple formula:

(points earned ÷ points possible) × 100 = class grade in percentage form

## Calculate My Grade: Basic Version

If your teacher doesn't use weighted averages, all you have to do to calculate your class grade is add up the number of points you earned on all tests and quizzes, as well as the number of points that were possible, and then divide the points earned by points possible.

So if you took three tests and scored 75/100, 80/100 and 95/100 points on them, what is your grade so far?

1. ## Add Total Points Earned

2. Your total points earned are:

75 + 80 + 95 = 250

3. ## Calculate Total Points Possible

4. And your total points possible are:

100 + 100 + 100 = 300

5. ## Divide Points Earned by Points Possible

250 ÷ 300 = 0.83

7. ## Convert to Percentage Form

8. Right now your result is in decimal form, but it'll be easier to read if you multiply it by 100 to convert it to percentage form:

0.83 × 100 = 83%

## Another Example

Sometimes, not every test has the same amount of points available – but the formula for finding your class grade remains the same. What if you've taken four tests so far, receiving 42/50, 33/40, 56/60 and 21/25 points respectively? The steps for calculating your class grade don't change:

1. ## Add Total Points Earned

2. Your total points earned are:

42 + 33 + 56 + 21 = 152

3. ## Calculate Total Points Possible

4. Your total points possible are:

50 + 40 + 60 + 25 = 175

5. ## Divide Points Earned by Points Possible

152 ÷ 175 = 0.87

7. ## Convert to Percentage Form

8. Multiply by 100 to convert the decimal result into percentage form:

0.87 × 100 = 87%

## Be Your Own Weighted Average Calculator

There's another wrinkle: Sometimes teachers will use a weighted score or weighted average to figure their class grades, which means that some of your scores are more important for your final score than others. For example, your teacher might say that tests make up 80 percent of your grade, with homework counting for the remaining 20 percent.

When you deal with weighted grades, you calculate a grade for each scoring category as already described, dividing the total points earned by total points possible – and then you add an extra step.

1. ## Calculate a Grade for Each Scoring Category

2. Divide points earned by points possible to calculate your grade in each scoring category. So if you've earned 280 points out of 300 points possible on tests, you'd have:

280 ÷ 300 = 0.933 for tests

And if you were diligent in your homework and got 295 points out of 300 possible, you'd have:

295 ÷ 300 = 0.983 for homework

Note that for now, you're leaving the results in decimal form.

3. ## Multiply by Weighted Percentages

4. Next, multiply the grade in each scoring category by the appropriate weighted percentage. Go ahead and leave the weighted percentage in decimal form. This gives you:

0.933 × 0.8 = 0.7464 (because tests are worth 80% or 0.8 of your grade), and

0.983 × 0.2 = 0.1966 (because homework is worth 20% or 0.2 of your grade).

0.7464 + 0.1966 = 0.943

But the result is still in decimal form. Go ahead and multiply by 100 to convert it to an easier-to-read percentage:

0.943 × 100 = 94.3%