Calwarden
Back to calculator
Education & GPAGenerated accuracy model review: 2026-05-06

Attendance 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

  • The calculator compares your current attendance rate against the target. * **Max Missable** = Total Classes × (1 - Target%). * **Can Miss** = Max Missable - Classes Already Missed.

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

  • Total Classes in Semester: 40
  • Classes Attended So Far: 20
  • Classes Missed So Far: 2
  • Required Percentage: 75%

Expected outputs

  • Current Attendance: 90.91%
  • Classes You Can Miss: 8
  • Must Attend Next: 0

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 every class session counts equally toward attendance.
  • It uses the attendance requirement exactly as entered and does not account for separate departmental warning rules.
  • Excused absences, tardy conversion rules, or attendance points systems may be handled differently by your instructor.

Unit handling

  • Total Classes in Semester accepts numeric values.
  • Classes Attended So Far accepts numeric values.
  • Classes Missed So Far accepts numeric values.
  • Required Percentage accepts values in %.
  • Current Attendance 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 attendance-calculator calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for Attendance Calculator.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

Use calculator