How to Handle Courses with a Standard Deviation Curve
Standard-deviation curves set grade cutoffs relative to the class mean and spread rather than a fixed percentage scale, common in large lecture and weed-out courses.
Key rule: Under a standard-deviation curve, grade cutoffs shift based on the mean and spread of the whole class, not a fixed scale.
Calculation Steps for Courses with a Standard Deviation Curve
- Get your overall running grade from your course management system.
- Confirm the final exam weight from your syllabus grading breakdown.
- Set your target based on degree requirements, financial aid minimums, or major prerequisites.
- Run the calculator and interpret: under 100% is achievable, over 100% means lower your target.
Frequently Asked Questions
A curve adjusts all scores up — either by a flat amount or by setting the top score to 100%. Your pre-curve score is what this calculator uses. Recalculate once the curved score is
The exact final exam weight from your syllabus — this drives the entire calculation.
Lower your target and recalculate. Ask your professor about extra credit or incomplete grade options.
Always enter the single running overall grade shown in your gradebook.
No — the formula is the same. Under a standard-deviation curve, grade cutoffs shift based on the mean and spread of the whole class, not a fixed scale..
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