The average school year used to be170days.

平均学年长度过去是170天。

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On average, the kids increased their writing abilities by 2.1 grade levels and their math by 2.9 grade levels within one school year.

平均来说，孩子们在一个学年内提高了2.1个年级的阅读能力和2.9个年级的数学能力。

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In other words, the study notes, at the peak of their earning power, the average worker with only a high school diploma earns only about as much as a college graduate one year out of school.

研究指出，换言之，即便在赚钱能力处于顶峰时，只有高中文凭的普通工人挣的钱也只有刚毕业一年的大学生那么多。

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Teachers update and add new material to the website during school holidays and get just seven weeks off each year, roughly the same as the average Swedish office worker.

ECONOMIST: Private education

Any university team in an NCAA-sanctioned sport had to "achieve a 900 multiyear APR or a 930 average over the most recent two years to be eligible" for postseason play during the 2012-2013 school year, according to Christianson.

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The overall average shows that 86.7% gained their first choice of school for this autumn, higher than last year.

BBC: Parents face big local differences in secondary places