1991到2003年全美国高中生使用的类固醇增加了两倍多。

Across America, between 1991 and 2003, steroid use in high schools more than doubled.

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超过50%的美国高中生曾接受普林斯顿考试辅导中心的课程培训。

Over 50% of American high school students take a Princeton Review course.

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根据一份调查，只有12%的美国高中生能够通过一个基础的历史测试。

According to a new report, only 12 percent of American high school students can pass a basic history test.

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