Instructor-to-Student Ratio Calculator
Determine the maximum and recommended instructor-to-student ratios for scuba courses based on certification level, water conditions, and assistant availability.
Inputs
Results
Max students per instructor
4
Recommended ratio
3
Instructors needed2
Recommended instructors2
Assistants needed1
Actual ratio3
Training quality score70
How to Use This Calculator
- Select the course level being taught (open water, advanced, rescue, or specialty).
- Choose the water conditions: ideal, moderate, or challenging (cold/current/low visibility).
- Indicate whether a certified divemaster or assistant instructor is present.
- Enter the total number of students enrolled in the course.
- Select the students' experience level: brand new, some confined water experience, or already certified.
- Read Max Students per Instructor and Instructors Needed to staff the course in compliance with agency standards.
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