How to use it
Enter a raw grade, pick a curve type, and set the amount. 'Add points' shifts everyone up; 'square root' helps lower scores most; 'multiply' scales all scores by a factor.
Formula
Add: Curved = Raw + points · Square root: Curved = √Raw × 10 · Scale: Curved = Raw × factorExamples
Add points: Raw 68%, add 12 points → 80%.
Square root: Raw 64% → √64 × 10 = 80%.
Frequently asked questions
What is a square root curve?
It maps each raw score to √score × 10, boosting low scores more than high ones while keeping order.
Which curve is fairest?
Adding a fixed number of points is simplest and most transparent; square-root curves help struggling students most.
Can a curve push a grade above 100%?
Our calculator caps results at 100%.