Grade Curve Calculator
Model a proposed curve without hiding the transformation: add fixed points, move the top score to a target, scale to a target top score or shift the mean.
Check the original class distribution first
Use Class Average & Grade Distribution before applying a curve so the baseline mean, spread and pass rate remain visible.
Compare all four curve methods before choosing a grading policy
Start with two class scores, 72 and 80 (mean 76). Add fixed points with a value of 5 yields 77 and 85, regardless of the original top score. Add so highest score reaches target, with a target of 84, instead adds 84 − 80 = 4 points to both scores and yields 76 and 84. The two additive modes use different inputs: an explicit point adjustment versus a desired highest score.
Multiply so highest score reaches target, also targeting 84, uses a factor of 84 ÷ 80 = 1.05. It gives 75.6 and 84 rather than the additive top-to-target result of 76 and 84; the score gap changes from 8 to 8.4. Shift mean to target, with a target mean of 85, adds 85 − 76 = 9 points and gives 81 and 89. This fourth mode is tied to the class mean, not to an individual score.
These are scenario comparisons, not recommendations for an official school curve. There is no automatic 100% cap: inspect the complete transformed list, the effect on lower scores and any institutional rounding or maximum-score policy before reporting results.
Privacy: calculator inputs are processed in your browser; Lynara does not need to upload these values to calculate the result.
Formula
curve method transforms each raw score using a visible additive or multiplicative rule; results are not automatically capped at 100%
Example
If the highest score is 92 and “add so top = 100” is selected, 8 points are added to every entered score.
Useful for
- Comparing possible grading curves
- Teacher score adjustment planning
- Testing target-mean or target-top methods
Questions
Does Lynara recommend a curve method?
No. The tool shows the arithmetic effect of the method you choose.
Are curved scores capped at 100%?
No. Lynara leaves transformed values visible so the effect of the rule is not hidden; apply a cap only if your actual policy requires it.