Some popular American charter schools now offer longer school days and shorter summer holidays.

一些流行的美国特许学校，现在提供更长的上学时间和更短期的假期。

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Some of the most popular American charter schools offer longer school days and shorter summer holidays.

一些美国最受欢迎的特许学校也提供较长的在校时间和较短的暑假。

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The most prominent American charter schools, strongly focused on getting poor children into college (see main story), insist that children do regular mental arithmetic between lessons.

当今顶级的一些美国特许学校，专门帮助穷人子弟打开通往大学的大门，他们普遍强调孩子们在每节课之间应当按期做些心算。

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Some popular American charter schools now offer longer school days and shorter summer holidays.

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His followers have already started some 135 American charter schools.

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Many of the best American charter schools are run by teachers who joined the profession via Teach for America, a programme that places ambitious graduates in tough urban schools.

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