When it comes to the letter grade on your test or homework, you might notice that there is no letter. Have you ever thought about why that is so?

当涉及到你的考试或家庭作业的字母分数时，你可能会注意到没有字母。你想过为什么会这样吗？

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The study found that those who wrote about their test anxiety in some cases received a whole grade letter higher than those who wrote about an unrelated event, or did not take the time to write.

研究显示，在某种情况下，比起写了与考试无关的话题、或是没有写东西的学生，那些写下了自己考试焦虑心理的学生拿到整整高了一个等级的分数。

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Test it - not at some future date, but test it as you read this letter.

检验它，不是在将来的某个日子，而是在你读这封信的时候检验它。

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And school-district officials in Oklahoma complained recently about how test scores are factored into controversial new letter grades assigned to schools.

WSJ: Seattle Teachers Protest Exams