It is remarkable that large, mixed-ability classes could be kept together for maths throughout all their compulsory schooling from 6 to 15.

值得一提的是，在6岁到15岁的整个义务教育阶段，庞大的能力不同的班级都可以一起学习数学。

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Children enter schools at age 5, when compulsory schooling starts.

孩子们在5岁开始上学，参加义务教育。

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All are taught together, covering the same syllabus at the same rate until they finish compulsory schooling.

在义务教育完成以前，他们要一起上学，并使用相同的教科书，学习进度也一样。

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Compulsory schooling, introduced in the nineteenth century, pushed back the age of maturity to sixteen or so.

NEWYORKER: Spoiled Rotten

The United States differs from many other countries in that compulsory schooling ends at age 16, thus making it possible for many students to leave school before completing basic education as defined in United States.

UNESCO: II Part Analytic Section

Fast-forward to the Revolution of 1789 and francien-derived French was imposed as the language of liberty and nationhood, its spread then aided by the emergence of a French press in the 19th century and, from 1882, by compulsory schooling.

ECONOMIST: How multilingual is France?