What does this tool do?
Attendance rate is the share of scheduled sessions you attended, with excused absences treated according to your policy. This calculator also estimates how many future classes are needed to reach a 90% target.
The Formula
Attendance = (Attended + Excused) ÷ Total sessions × 100Frequently Asked Questions
Do excused absences count against attendance?
Policies differ. This calculator adds excused absences to the attended count; if your school counts them as absences, enter zero for excused and use the attended total instead.
How is the 90% target calculated?
The estimate assumes every future class is attended. It solves for the number of additional attended sessions needed for the overall rate to reach 90%.