Back to calculator
Food & MealGenerated accuracy model review: 2026-05-06
School Lunch Cost Calculator 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
- Total school cost = children x days per week x school weeks x lunch cost + weekly extras x weeks.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Children: 2
- School Lunch Cost: $3.75
- Lunch Days per Week: 5
- School Weeks: 36
- Packed Lunch Cost: $2.5
- Weekly Extras: $5
Expected outputs
- School Lunch Total: $1,530.00
- Weekly Cost: $42.50
- Packed Lunch Total: $900.00
- Packed Lunch Savings: $630.00
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
- All prices, rates, package sizes, and recipe values are user-entered unless clearly labeled as a general planning default.
- Calculations run locally in your browser and do not store food, nutrition, household, or budget details.
- This is planning math, not nutrition, medical, allergen, or food-safety advice.
Unit handling
- Children accepts numeric values.
- School Lunch Cost accepts values in $.
- Lunch Days per Week accepts numeric values.
- School Weeks accepts numeric values.
- Packed Lunch Cost accepts values in $.
- Weekly Extras accepts values in $.
- School Lunch Total is displayed as currency.
- Weekly Cost is displayed as currency.
- Packed Lunch Total is displayed as currency.
- Packed Lunch Savings is displayed as currency.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Currency outputs are displayed with standard US dollar formatting.
- Input precision follows configured step values where provided.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current school-lunch-cost-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for School Lunch Cost Calculator.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.