Grade Curve Calculator | Instantly Adjust and Curve Exam Scores

A Grade Curve Calculator is a tool used to determine the letter grade or grade classification based on a student’s score in relation to the total points available. It is commonly used in education systems to apply a grading curve or scale that reflects the overall performance of students in a class or exam.

Grade Curve Calculator – Instantly Adjust and Curve Exam Scores

Enter Student Scores

Enter all scores separated by commas, spaces, or line breaks.

Curve Method Linear Curve (Add Points) Set Highest Score to 100 Standard Deviation Curve (Bell Curve) Percentile Bump

Choose how you'd like to curve the grades.

Points to Add

Enter the number of points to add to each score.

Maximum Possible Score

Usually 100, but adjust if your test uses a different scale.

Target Mean (Optional)

Only used for Standard Deviation (Bell Curve) method.

Example Presets:

Small class, linear curve: 68, 72, 75, 80, 85, 90, 95 (Add 5 points) Midterm: 55, 67, 74, 81, 88, 93, 97 (Set highest to 100) Large class: 60, 62, 65, 70, 75, 80, 85, 90, 95, 98 (Bell curve to mean 80) Quiz: 10, 12, 14, 16, 18, 19, 20 (Percentile bump) Short test: 20, 24, 28, 30, 35, 40, 45, 50 (Max score 50, add 3 points)

Calculate Reset

Curving grades...

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To use the Grade Curve Calculator:

1. Total Points: This refers to the total number of points or marks available in a class or exam. It represents the maximum achievable score and is typically provided by the instructor or specified in the exam instructions.
2. Your Score: This is the actual score or number of points you have achieved in the class or exam. You need to input your score into the Grade Curve Calculator to determine your grade.

After entering the required information and clicking the “Calculate” button, the script within the HTML code mentioned earlier performs the necessary calculations. It divides your score by the total points, multiplies the result by 100 to obtain a percentage grade, and then determines the letter grade based on the following scale:

• A: 90% and above
• B: 80% – 89%
• C: 70% – 79%
• D: 60% – 69%
• F: Below 60%

The calculated letter grade is then displayed within the form itself, below the “Calculate” button.

It’s important to note that grading curves or scales may vary in different educational institutions or contexts. The scale provided above is a common example, but it can be customized based on specific requirements or policies established by the instructor or institution.