In recent years, with the rapid expansion of graduate enrollment, pupil-teacher ratio has increased rapidly.

近年来，硕士研究生招生规模迅速扩大，生师比也增长迅速。

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In order to make the student teacher ratio is controlled within a reasonable range, universities need to strengthen teachers team to meet the needs of higher education management.

为了使生师比控制在合理的范围内，高校需要壮大师资队伍以满足高校教育管理的需要。

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The school has a very high teacher-student ratio.

这所学校的师生比例很高。

《牛津词典》

Although the pupil-to-teacher ratio has been cut nearly 40% over the past 40 years, millions of our children have not benefited.

FORBES: Fact and Comment

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