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Many students with 700+ M do poorly in engineering, and many students with lower scores do well. The links I listed above showed that math SAT only explained a small portion of variance in GPA and graduation rates. If by “all things being equal”, you mean similar HS GPA, HS curriculum, SES, gender/ethnicity, etc., instead of looking at scores alone, then math SAT I can have a negligible contribution to success beyond the other variables. If we are going to focus on the small contribution from SAT scores instead of the larger contributions from HS curriculum and HS GPA, note that many studies including the one linked above show that the SAT writing score has a greater contribution to STEM graduation than the math score.</p>
<p>Regarding the OP, his math ACT was in the 95th percentile, and has math SAT was in the 88th percentile. These aren’t low scores and certainly do not doom him to failure in engineering, although it is unusual that a student whose verbal is much higher than math would choose to go into engineering.</p>