Yeah, as a low test score made you doubt your intelligence.

因为考试分数低让你怀疑自己的智商。

All areas of the U.S. reported lower test scores in math.

据报告，美国所有地区的数学考试成绩都较低。

But, there are downsides as well, including studies showing lower test scores, worse academic comprehension and lower graduation rates.

但也有弊端，包括研究显示更低的考试成绩，更匮乏的学术理解和更低的毕业率。

He blamed federal policies from around 20 years ago that began leading to the closure of schools where students repeatedly had low test scores.

他将原因归咎于大约20年前开始的联邦政策，这些政策开始导致学校关闭，而关闭的学校里的学生们的考试成绩总是很低。