Back to calculator
Education & GPAGenerated accuracy model review: 2026-05-06
Test Score accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- **Score % = ((Total Questions - Wrong Answers) / Total Questions) × 100** The letter grade is assigned based on a standard scale (A=90-100, B=80-89, etc.).
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Total Questions: 50
- Number Wrong: 5
Expected outputs
- Percentage: 90.00%
- Letter Grade: A-
- Correct / Total: 45/50
Known limitations
- This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
- Use the result as a planning estimate unless the calculator page states a stricter purpose.
Assumptions
- This calculator assumes each question is worth the same amount unless you manually simulate partial credit in the wrong-answer field.
- It uses the built-in plus/minus letter thresholds shown in the calculator rather than your school's exact rubric.
- Curves, dropped questions, and extra-credit items can make an instructor's official result differ from this estimate.
Unit handling
- Total Questions accepts numeric values.
- Number Wrong accepts numeric values.
- Percentage is displayed as a percentage.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Percent outputs are displayed with two decimal places.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current test-score-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Test Score.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.