If you decide to grade your students’ schoolwork, use these simple steps to determine the percentage and letter grade for any assignment or test.
To calculate a grade, you will need to figure out the percentage of questions that your student answered correctly. All you need to know to find the grade is the total number of questions on the assignment and how many answers are correct. After that, you will just need to plug a simple equation for degree calculator into a calculator and convert the percentage to a letter grade.
Correct the paper.
Determine the number of total questions.
Count the number of questions answered correctly.
Take the number of correct answers and divide by the total number of questions. (Example: 15 correct answers divided by 20 total questions equals 0.75)
Multiply this number by 100 to turn it into a percentage. (Example: 0.75 multiplied by 100 equals 75%)
Grade ranges often vary among professors and teachers. However, a typical, easy-to-use grade scale is:
90-100% = A
80-89% = B
70-79% = C
60-69% = D
59% and below = F
Using the examples above, 75% would earn a C letter grade.a