Retaking a Class: Grade Replacement vs. Grade Averaging
See how repeated courses can affect GPA when a school replaces the old grade, averages both attempts, or keeps both on the transcript.
Open College GPA CalculatorRetakes Can Help, But the Policy Decides How Much
Retaking a class is one of the fastest ways to repair GPA when the original grade was very low. The effect depends on your school's repeat policy. Some schools replace the old grade in the GPA. Some average both attempts. Some keep both attempts in the calculation but allow only one set of credits toward graduation.
Three Common Repeat Policies
- Grade replacement: the new grade replaces the old grade in the GPA calculation.
- Grade averaging: both attempts count in the GPA.
- Credit-only replacement: both grades may remain, but credits are not duplicated toward graduation.
Example: Replacing an F With a B
Suppose a student earned an F in a 3-credit class. On a 4.0 scale, that attempt contributed 0 quality points. If the student retakes the class and earns a B, the new attempt contributes 9 quality points. If the school replaces the F, the GPA improvement is much larger than if both attempts are averaged.
High School Retakes Can Work Differently
College admissions systems may recalculate repeated courses in their own way. For example, the University of California publishes specific GPA rules and says it calculates the official UC GPA when students submit an application. See the UC GPA requirement page for one example of how detailed these rules can be.
How to Model a Retake
If your school replaces the old grade, remove the first attempt from your calculator scenario and enter the new grade. If your school averages both attempts, keep both rows. If you are unsure, model both outcomes and ask the registrar which one matches your transcript.