Would it be by US law a discrimination to limit a job offer by IQ?
<p>I am not sure whether there have been cases already in US.</p>

<p>Would it be illegal to say in a job offer they require people from a certain IQ level? </p>

<p>IQ level is not a protected class and so using it to discriminate between job applicants is not illegal per se.</p>

<p>However - in the U.S., studies have shown that self-identified blacks score around 15 points lower than self-identified whites, on average. If your use of IQ to discriminate between applicants reflected this disparity - and did not represent a bona fide occupational qualification (unlikely) - then your use of IQ for this purpose could easily be construed as illegal discrimination based on race.</p>

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