So What Club
Start free

Media, luxury and education

Student-teacher ratio

The number of students for each teacher.

Last reviewed

What does Student-teacher ratio mean?

The student-teacher ratio is the number of enrolled students divided by the number of teachers, usually counted as full-time equivalents. Teachers are the largest cost in most schools, so this ratio drives margin, while parents and regulators often see a low ratio as a sign of quality. Example: a school with 1,200 students and 80 teachers has a ratio of 15 to 1. If the average teacher costs 30,000 a year, teaching cost per student is 2,000; moving to 18 to 1 cuts it to about 1,667 but may hurt quality and reputation. The OECD publishes country comparisons in its yearly Education at a Glance report.

Where does it come up in case interview prep?