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<p>Because higher education in America is much better than higher education in Europe, as OP explained earlier.</p>
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<p>In reality, the math section level doesn’t test material covered after 10th grade in America, either. The SAT Math section doesn’t test anything past Geometry, I believe. The difficulty, in my opinion, lies in the way the test writers attempt to force students to apply basic skills to not-so-obvious problems.</p>