How would a specific curve change my test score?

How we calculated this

An additive curve adds a flat number of points, capped at your maximum; a multiplicative curve multiplies the raw score, also capped. Using the example values above (80% raw, a 5-point additive curve, cap 100%), the curved score is 85%. If the raw score plus the curve would exceed the cap, the result is held at the cap instead.

Limitations

This models exactly the curve you specify; it does not predict whether your instructor will actually apply one, or which type. Treat this as "what if," not "what will happen."

Common mistakes

A common error is entering a multiplicative parameter as a percentage (110) instead of a multiplier (1.1), which produces a wildly incorrect curved score. Double-check that a multiplicative parameter is entered as a decimal multiplier, not a percentage.

Frequently asked

Can the curve lower my score?

A negative additive parameter or a multiplier below 1 would, though that is unusual for a curve in practice; the tool does not prevent it since it is your own scenario to test.

Why is there a cap?

Most curves are capped at 100% (or occasionally higher for extra credit); entering the cap that applies to you keeps the result realistic.

What is the difference between additive and multiplicative curves?

Additive adds the same flat number of points to every score, so every student gains the same amount regardless of their raw score. Multiplicative scales every score by the same factor instead, which actually gains higher raw scores more percentage points than lower ones: a 1.1 multiplier adds 5 points to a raw 50% (to 55%) but 9 points to a raw 90% (to 99%), since 10% of a bigger number is a bigger number.

Can I test a curve before it is officially announced?

Yes, as a hypothetical; just remember the result reflects a scenario, not a confirmed grade change, until your instructor applies it.

Which curve type actually helps a struggling score more?

An additive curve, since it adds the identical flat amount to every score regardless of how low it started; a multiplicative curve gives its largest point gains to scores that were already high, which is the opposite of what a curve is usually meant to do for students furthest from passing.

Next decision

Once you have a curved score, see Points-Based Course Grade or Current Weighted Course Grade to see its effect on your overall course result.