How to use this calculator
Enter classes already held, attended classes, remaining classes, and planned future absences. The calculator uses an 80% requirement as a practical default.
Use projected attendance to check whether your planned absences still leave enough safety margin.
What the result means
The result shows current attendance and projected attendance after remaining classes. A low buffer means even one additional absence could create risk.
Projected attendance = (Classes attended + Remaining classes - Planned absences) ÷ (Classes held + Remaining classes) × 100
Attendance policies vary. Replace the default requirement mentally if your school requires a different minimum.