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I’m just going by the well-documented correlation between SAT and IQ. I realize this is a controversial topic, and there are experts who agree with either position on the matter; I just happen to fall into the camp that does see there to be a correlation between the two, even for today’s SAT. My rough estimate of the difference in IQ between Swarthmore and Haverford students is based on the difference between the average SAT scores of the students at the two places.</p>
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A 135 on most IQ tests will get you into MENSA. A 130 won’t. But, what qualifies as a “real world difference” is subjective, so I’ll leave it to you to make that decision for yourself in the event you ever decide to inform yourself on the matter further.</p>