I was under the impression that every year we discover more genes tied to "educational attainment" so the assumed heritable % for g increases. In another comment you mentioned 100% environmental--If you have a study, please link to it. Granted, you are correct at the other end, where if one grows up malnourished and lives in a war zone, this will have a oversized negative impact on intelligence potential, but the overall context of this discussion is admittance to Yale.

Intelligence is just one small aspect out of many of what it means to be a human. It isn't special any more than having freckles is. We really need to dissolve the cult we have created around it.

Go watch "three identical strangers".