Attendance Rate Calculator Formula

Understand the math behind the attendance rate calculator. Each variable explained with a worked example.

Use the Attendance Rate Calculator

Formulas Used

Attendance Rate

attendance_rate = (days_present / total_days) * 100

Days Absent

days_absent = total_days - days_present

Absence Rate

absence_rate = ((total_days - days_present) / total_days) * 100

Variables

VariableDescriptionDefault
days_presentDays Present165
total_daysTotal School Days180

How It Works

How to Calculate Attendance Rate

Attendance rate is the percentage of school days a student was present.

Formula

Attendance Rate = (Days Present / Total School Days) x 100

Chronic absence is defined as missing 10% or more of school days (attendance below 90%).

Worked Example

A student is present 165 out of 180 school days.

days_present = 165total_days = 180
  1. 01Attendance rate = (165 / 180) x 100 = 91.7%
  2. 02Days absent = 180 - 165 = 15
  3. 03Absence rate = (15 / 180) x 100 = 8.3%

Ready to run the numbers?

Open Attendance Rate Calculator