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About 10 percent of students in the Portland, Oregon public schools are assigned by lottery to dual-language classrooms that offer instruction in Spanish, Japanese or Mandarin, alongside English.

俄勒冈州波特兰市公立学校中，大约10%的学生经过抽签被分配到双语课堂，除了接受英语教学，还有西班牙语、日语或中文教学。

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There aredozens of language instruction books and audio programs available.

可利用的语言教科书和教学音频非常多。

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These challenges, which are more acute in rural than in urban areas and are exacerbated by the high levels of poverty among rural families and the predominant use of Spanish as the language of instruction, have created significant barriers which preclude the meaningful participation of indigenous peoples in the public education system.

UNESCO: Bilingual Literacy for Life

Candidates must be proficient in reading and writing the language of instruction in the proposed country of study.

UNESCO: Sources

And most black children came from poor, ill-educated families where English, the main language of instruction, was not their mother tongue.

ECONOMIST: South Africa's education system