<p>Foreveralone, there might be a good correlation assuming you are comparing people with similar backgrounds, circumstances etc…For example, if you are comparing two Americans who come from the same socioeconomic background, had similar preparation for the test and took the test the same number of times, then I agree that there might be good correlation. </p>
<p>However, what if they come from different socioeconomic backgrounds (some from wealthy families who attend excellent high schools while others from poor families who attend mediocre high schools)? What if English is not their native language? What if some test takers get a lot of professional test prepping help while others do not? What if some are taking the test for the first time while others are taking it for the third time? What if one test taker is 18 and another is 15? Any of those factors could have a significant impact on the result and not be an indication of IQ. What if more than one of those factors is at play? </p>
<p>Kids from the French school in Dubai do poorly on the SAT/ACT. A 2000/30 would be as good as it gets. Yet those kids go to universities like Brown, Columbia, Cornell, Michigan, Northwestern etc…, and maintain 3.7+ GPAs in majors like Engineering, Mathematics, Physics etc…without breaking a sweat. Are those kids any less intelligent that Americans who score 2300 on the SAT? Obviously not. </p>
<p>Besides, in life, many believe that EQ (maturity, social etiquette, emotional stability etc…) is far more important than IQ. I tend to agree.</p>