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<p>Not really; search cc for many threads on this issue. ACT Reading is a whole like the CR – both contain miserable, booooorrrrring passages. Math is math – SAT math contains more reasoning, but ACT requries higher-level math (trig vs. Alg II). But, the ACT science is their version of reasoning, since no science knowledge is required. English and sentence construction is not much different – idioms are idioms, comma splices are comma splices, run-ons are run-ons… Thus, the main differences are: Math reasoning (SAT) and speed (ACT).</p>
<p>The vast majority of kids do equally well (or poor) on both tests. However, some kids do better on one than the other. A person with strong reasoning ability is likely to do ‘better’ on the SAT since its math is a lot of reasonsing, and 50% of the CR/M score.</p>