<p>From my limited experience, it seems to me that college ad coms value hard work equally as much as intelligence, as demonstrated by a high GPA in a rigorous course of study. Therefore, membership in a high-IQ society probably won’t attract the favorable attention you are hoping for. But it doesn’t cost much to apply and take their tests, so how can it hurt to include it in your ECs if you qualify? Just be realistic that it most likely won’t make that much difference.</p>