Student-Teacher Ratio Calculator

Enter the total number of students and teachers to calculate the student-teacher ratio.

Student-Teacher Ratio Calculator

Calculate the student-to-teacher ratio for a class or school.

This is a straightforward ratio calculation. Note that student-teacher ratio (a resourcing statistic) is not the same as average class size, since it includes teachers who may not all be in a classroom at the same time (e.g. specialists, part-time staff).

Student-teacher ratio is a commonly cited measure of school resourcing, dividing the total number of enrolled students by the total number of teaching staff.

Example

  • With the default values shown above, this calculator returns: Student-Teacher Ratio (students per teacher) ≈ 18.0.

Frequently Asked Questions

Is student-teacher ratio the same as class size?

Not exactly — student-teacher ratio is a school-wide or district-wide resourcing statistic, while class size refers to the actual number of students in a specific classroom at one time, which can be higher or lower than the overall ratio.

What is considered a low student-teacher ratio?

This varies by country and education level, but ratios below roughly 15:1 are often considered relatively low (more individual attention per student), while ratios above 25:1 are often considered relatively high.

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