Student-Teacher Ratio Calculator
Calculate the student-to-teacher ratio and staffing adequacy for a school or classroom.
Student–Teacher Ratio
20.5:1
Average (21–25:1)
With Aides (30 staff)
15.0:1
| Ratio | Assessment | Typical Context |
|---|---|---|
| ≤ 12:1 | Excellent | Special education, elite private schools |
| 13–18:1 | Good | Well-funded public schools, private schools |
| 19–24:1 | Average | Typical US public schools |
| ≥ 25:1 | High | Under-resourced schools, developing countries |