Free staffing tool
School Supervision Coverage Calculator
Enter a student-to-adult ratio and the number of separate areas that need supervision. You can also include staff for breaks or backup coverage.
Worksheet
Enter your details
Your result will appear here.
- 1Enter the expected student count
- 2Set the school's ratio and coverage zones
- 3Review the staffing estimate, including any relief coverage
Before you use the result
What to know about this result
This tool does not establish a legally sufficient supervision ratio. Follow school policy, student needs, contracts, insurer guidance, and applicable law.
Why are zones included?
A ratio alone can understate staffing when adults must maintain line of sight in multiple separate areas.
What is relief coverage?
It is optional additional staffing that allows breaks or provides backup without leaving a zone uncovered.
You may also need