Easy Grader for Teachers

Simply the easiest way to grade stacks of paper super fast! Use this teacher's grade calculator to quickly find the grade percentage!

Number of Questions:

Number wrong:

Results:

10/10 = 100%

Show Grade Percentage Chart Show Decimals

Calculator Instructions

To use the easy grader, enter the number of problems on the quiz, test, exam or assignment.
Quickly increase or decrease the number of problems wrong by pressing the "+1 Wrong" or "-1 Wrong" button. The score will be immediately recalculated.
Check the box next to "Show Grade Chart" to see a table listing the grade percentage for each possible combination of wrong problems.
Check the box next to "Show Decimals" to see the score rounded to two decimal places.
Last but not least, enjoy this quick grader and have wonderful day!

First, determine the total number of problems on the quiz, test, exam, or assignment.
Then count the number of incorrectly answered problems.
Next, subtract the number of wrong problems from the total number of problems.
Then divide the result from step 3 by the total number of problems.
Last, multiple the result from step 4 by 100 to determine your grade.

grade percentage = (total number of problems - number wrong) / total number of problems * 100

For this example, let's assume there are 22 problems on an exam. The total number of problems is equal to 22.
Let's also assume that the student got 3 problems wrong. Therefore the number of problems wrong is equal to 3.
Now subtract the number of wrong problems from the total number of problems. That give us 22 - 3 = 19.
Now divide the result from step 3 by the total number of problems. That gives us 19 / 22 = 0.8636.
To get the grade in percentages, multiple the result from step 4 by 100. In this example, the grade percentage is 0.8636 x 100 = 86.36%.