How to Use the Exam Grade Curve & Test Statistics Calculator
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1
Enter test or exam scores separated by commas or line breaks (e.g. 54, 68, 72, 85, 91).
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2
Select a curving method: Flat Addition (+N points), Square Root Curve (10 × √Score), or Linear Scaling to Top Score.
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3
Examine the curved results table alongside original grades.
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4
View summary statistics including mean, highest score, and pass percentage.
Practical Example & Use Case
Common Real-World Scenario
A teacher curving an exam where the highest score was 81 out of 100, scaling the top score to 100% proportionately.
Technical Notes & Limitations
Browser Engine Architecture
Calculates standard curving transformations with maximum score capping at 100%.
Frequently Asked Questions
How does the Square Root curve work?
The square root curve takes the square root of the raw score and multiplies it by 10 (e.g., 64 becomes 80), providing a generous boost to lower scores while gently boosting higher scores.