“High school GPA” is not one national calculation. A school-issued transcript GPA and a college's admission GPA may use the same grades but different populations and rules.
FCPS transcript example
Fairfax County Public Schools publishes a current profile describing the courses included in its GPA, its plus/minus values, and additional points for designated courses. It also states that FCPS does not rank students.
To reproduce an FCPS result, you need the applicable transcript course population, exact final marks, credits, eligible course designations, and current precision rule. The fact that FCPS uses named +0.5 and +1.0 additions does not make those bonuses universal.
UC admission GPA example
The University of California calculates a separate first-year admission GPA from specified A–G courses and grade periods. Its published method ignores plus and minus marks, defines eligible honors work and caps, and says not to round the result.
This is a recipient calculation, not a replacement for the school transcript GPA. It needs A–G eligibility, grade year or summer, honors eligibility, residency-related rules, and the applicable cap—not merely course name, letter, credit, and level.
Why the outputs differ
| Field | School transcript policy | UC admission policy |
|---|---|---|
| Owner | School or district | University of California |
| Purpose | Issued academic record | First-year admission review |
| Course population | District-defined | UC A–G and specified grade periods |
| Plus/minus | District table controls | Ignored in UC GPA |
| Weighting | District-designated courses | UC eligibility and caps |
| Precision | District rule | UC says not to round |
Different answers do not imply that one calculation is wrong. They answer different policy questions.
A safe workflow
- Preserve every original transcript course, mark, credit, and designation.
- Identify whether you need the school GPA or a named recipient GPA.
- Apply only that authority's course population.
- Apply its exact grade and weighting table.
- Show every numerator and denominator contribution.
- Follow its precision rule.
- Keep each result under its official name.
Do not proportionally convert one result to another.
What this site's High School Calculator does
The High School GPA Calculator lets you enter terms, grades, credits, and fixed course categories, then toggle the site's fixed weighting assumptions. It shows one current result at a time. It does not load FCPS or UC rules, validate A–G eligibility, apply UC honors caps, or display official weighted and unweighted results side by side.
Use it as a hypothetical planner only when its displayed table matches your intended model.
Application reporting
Follow the current application's field instructions. Do not assume that every college strips weights or recalculates the same way. Yale, for example, says it reads transcripts in context and does not universally reweight or unweight GPAs.
Frequently asked questions
Is unweighted GPA always a 4.0 national formula?
No. “Unweighted” indicates the absence of a particular weighting treatment; it does not define course inclusion, plus/minus values, units, or rounding.
Do AP or IB courses automatically receive extra points?
Only the applicable school or recipient policy can assign those points. AP exam credit and high-school GPA weighting are separate decisions.
Should percentages be converted with a 90/80/70/60 chart?
Only if the authority publishes that exact table. Otherwise preserve the original marks and follow the recipient's instructions.
Bottom line
Calculate the school record and each recipient GPA separately. Their owners, course populations, weighting rules, and precision—not the label “high school GPA”—determine the result.