Maths teachers in English primary schools need only a C grade at GCSE in the subject, while many teaching at the same level in Japan have a maths degree.

在英国，能教数学老师的资历要求十分低，只需要在(英国)普通中等教育证书拿到C等级就可以从事教育工作。 而在日本，从事同样性质工作的数学老师必须得拿到相关数学专业的学位证书。

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Last year the national program for playground safety gave the nation's playgrounds a grade of "C" for safety after visiting more than 3,000 playgrounds nationwide.

去年，国家游乐场安全计划在全国范围内走访了3000多个游乐场后，将国家游乐场的安全等级定为 “C” 级。

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Getting a grade like a B-plus or a C-minus adds or subtracts a few tenths of a point.

VOA: special.2009.03.05

C So, that's the breakdown. And, the grade is C level, 50% and it's based upon a performance of 50% absolute.

这些就是分类，分数是，那就是基于成绩的。

麻省理工公开课 - 固态化学导论课程节选

In addition they endorse proposals to make over-16s in England study GCSE maths until they have achieved at least a C grade.

BBC: New qualification to boost post-16 maths numbers urged

It says more than 10, 000 pupils missed out on a C grade in GCSE English because of what they have called a "statistical fix".

BBC: Education & Family

Examiners raised the mark needed for a GCSE English C grade based on their judgement of the quality of the work, lawyers for the examiners have said.

BBC: Exam boards defend GCSE English role in High Court