Calculate dropout ratio, students who dropped out, or total enrolled from any two values with this dropout ratio calculator tool.
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Dropout Ratio Formula
The dropout ratio shows the percentage of enrolled students who dropped out. The calculator can solve for the dropout ratio, the number of students who dropped out, or the total number of students enrolled when you select a solve mode and enter its two required values.
- DOR = dropout ratio, expressed as a percentage
- D = number of students who dropped out
- E = total number of students enrolled
In Dropout ratio mode, the calculator divides the number of students who dropped out by the total enrollment, then multiplies by 100.
In Number who dropped out mode, the calculator converts the dropout ratio from a percent to a decimal and multiplies it by total enrollment.
In Total enrollment mode, the calculator divides the number of students who dropped out by the dropout ratio written as a decimal.
Dropout Ratio Reference Values
| Dropout Ratio | Meaning | Example With 1,000 Students Enrolled |
|---|---|---|
| 1% | 1 out of every 100 enrolled students dropped out | 10 students dropped out |
| 5% | 5 out of every 100 enrolled students dropped out | 50 students dropped out |
| 10% | 10 out of every 100 enrolled students dropped out | 100 students dropped out |
| 20% | 20 out of every 100 enrolled students dropped out | 200 students dropped out |
| Known Values | Missing Value | Formula to Use |
|---|---|---|
| Dropped out and enrolled | Dropout ratio | DOR = (D / E) × 100 |
| Dropout ratio and enrolled | Number dropped out | D = (DOR / 100) × E |
| Dropout ratio and number dropped out | Total enrolled | E = D / (DOR / 100) |
Example Calculations
Example 1: Calculate the dropout ratio
A school has 850 students enrolled, and 34 students dropped out.
Use the formula:
The dropout ratio is 4.00%.
Example 2: Calculate the number of students who dropped out
A program has 1,200 students enrolled and a dropout ratio of 6.5%.
Use the formula:
The number of students who dropped out is 78.
FAQ
What does dropout ratio mean?
Dropout ratio means the percentage of enrolled students who left before completing the course, grade level, school year, or program being measured. For example, a 5% dropout ratio means 5 students dropped out for every 100 students enrolled.
Is dropout ratio the same as retention rate?
No. Dropout ratio measures the share of students who left. Retention rate measures the share of students who stayed. If the only two outcomes are staying or dropping out, then retention rate can be estimated as 100% minus the dropout ratio.
Can the number of students who dropped out be a decimal?
In real student counts, the number of students should be a whole number. However, calculations can produce decimals when using percentages. The calculator shows the implied count and a separately labeled nearest whole count. A rounded percentage may imply a fractional count; the rounded count is approximate.
