Calculate class average students present per day, class attendance rate, days attended per student, individual attendance rate, or implied school days. Choose the matching task and enter its required values.
Related Calculators
- Completion Rate Calculator
- Marginal Frequency Calculator
- Conditional Frequency Calculator
- Extrapolation Calculator
- All Statistics Calculators
Average Monthly Attendance of Students Formula
Class average students present per day = total student-days present ÷ school days. Class attendance rate = present student-days ÷ (enrolled students × school days) × 100, assuming constant enrollment and a shared school calendar. The formulas below instead describe days attended per student; these are different quantities.
- AMA = attendance days per student for the month, measured in days or consistent partial-day equivalents
- AR = Attendance Rate, written as a percentage
- D = Number of school days in the month
In the individual-day modes, attendance rate and school days determine attended day-equivalents; attended day-equivalents and school days determine attendance rate. Attended day-equivalents and a positive attendance rate determine implied school days. This does not identify the actual school calendar.
Attendance Rate Benchmarks
These ranges are illustrative arithmetic groupings, not official standards or judgments that attendance is acceptable. A monthly class rate summarizes student-days and cannot show which students missed school. U.S. Department of Education chronic-absence reporting concerns individual students missing at least 10% of school days during a school year; it is a different measure. Follow the school’s rules for attendance and absence records.
| Attendance Rate | Arithmetic Interpretation |
|---|---|
| 95% to 100% | About 0% to 5% of possible attendance missed |
| 90% to 94.99% | About 5% to 10% of possible attendance missed |
| 80% to 89.99% | About 10% to 20% of possible attendance missed |
| Below 80% | More than 20% of possible attendance missed |
Common Monthly Attendance Values
This table shows average attendance days for common school-month lengths and attendance rates.
| School Days in Month | 90% Attendance | 95% Attendance | 98% Attendance |
|---|---|---|---|
| 18 days | 16.20 days | 17.10 days | 17.64 days |
| 20 days | 18.00 days | 19.00 days | 19.60 days |
| 22 days | 19.80 days | 20.90 days | 21.56 days |
Example
Example 1: Find average monthly attendance
A student has a 95% attendance rate in a month with 20 school days.
The average monthly attendance is 19 days.
Example 2: Find attendance rate
A student attended 18 days in a month with 20 school days.
The attendance rate is 90%.
FAQ
What does average monthly attendance mean?
Days attended per student describes how many school days one student attended, or a mean across students. Class average students present per day instead divides summed student-days present by school days. Choose the calculator task that matches your records.
Can average monthly attendance be a decimal?
Yes. The result can be a decimal when it is calculated from a percentage. For example, 95% attendance over 18 school days equals 17.10 days. In reports, this may be rounded depending on the school’s rules.
Why does the number of school days matter?
The number of school days sets the maximum possible attendance for the month. Missing 2 days in a 20-day month gives a different attendance rate than missing 2 days in an 18-day month.
