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Berman wrote a story last year saying a study by the Brookings Institution might be more valuable than other lists: it ranks schools based on how much value they provide their students.

伯曼去年写了一篇报道称，布鲁金斯学会的一项研究可能比其它榜单更有价值，这项研究根据学校为学生提供多少价值对学校进行排名。

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The study is based on observing and studying tens of thousands of children in over 100 schools in around 25 countries over the last ten years.

该项研究的研究人员在过去的十年里，对约25个国家的100多所学校中的数万个孩子进行了观察和研究。

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These graduates were culled from the 104 U.S.-based and international schools that agreed to participate in the study.

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