Grade Replacement Calculator
Estimate how a replacement score, retake score, or grade-forgiveness policy changes a course grade, category average, or GPA while keeping policy limits clear.
What does a grade replacement calculator do?
A grade replacement calculator estimates how much a retake, replacement test, corrected assignment, or grade-forgiveness policy could change a course grade or GPA. It is especially useful when one low score can be replaced by a newer score.
What is the grade replacement formula?
For a course grade, the basic formula is new overall grade = current grade + (replacement score − old score) × replaced weight. If only part of the old grade is replaced, the calculator blends the old and new scores first.
Why is replacement percentage important?
Some policies replace 100% of the old score. Others allow only partial replacement, such as replacing half of a test score or allowing corrections to recover up to 70% of lost points. The replacement percentage models that policy.
How do replacement caps work?
A cap limits the maximum replacement score. For example, a retake may be capped at 80%, even if the student earns 95%. Enter the cap to avoid overestimating the grade improvement.
Can this calculate retake GPA?
Yes, it can estimate GPA replacement when a school fully replaces the old grade points. Some institutions average attempts or keep both grades, so official GPA changes depend on transcript policy. For general GPA background, see College Board BigFuture on 4.0 GPA conversion.
What should I check before relying on the result?
Check whether the replacement applies to the assignment, category, final course grade, or transcript GPA. Also check deadline rules, attempt limits, grade caps, and whether extra credit or curves can combine with replacement.
Frequently asked questions
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Yes. Use the old test score, corrected score, and the policy replacement percentage.
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Yes, when the school replaces the old grade instead of averaging attempts.
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It is the highest score the replacement is allowed to count as.
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The replaced item may have a small weight in the course.
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Not necessarily. Transcript policy depends on the school.
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Yes, if the new replacement score is lower and the policy allows it to count.