The school has a very high teacher-student ratio.

这所学校的师生比例很高。

《牛津词典》

What is the teacher-student ratio for MBA class?

课程的师生比例是多少？

youdao

In 2015, the teacher student-ratio for MBA class is 1:15.

在2015年，工商管理硕士的课堂师生比例是1：15。

youdao

Infant mortality has declined, and some 100, 000 teachers have been hired to narrow the yawning teacher-student ratio.

BBC: Why Uttar Pradesh is India's battleground state

However, when you think about it, a low student-teacher ratio goal, is specifically a low-productivity goal inconsistent with productivity increases needed to stretch scarce tax and tuition dollars.

FORBES: Why Fixing America's Schools Means Increasing Teacher Productivity

During his campaign, he often noted Somerville's low student-to-teacher ratio.

CNN: Candidate Profile from Congressional Quarterly