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<p>The fact that US universities feel that they need to use external standardized tests to supplement applicants’ high school academic credentials indicates that they believe that the K-12 school curricula in the US are not very standardized as far as quality and grading goes, even though the course names and subject delineations may be superficially similar.</p>
<p>Of course, one can argue that this problem is even more extreme in countries where the universities’ sole criteria for admission is a standardized test, indicating that they do not trust high school records at all.</p>