I would much prefer direct IQ correlates rather than using education as a proxy for something better measured with IQ tests.
> Likewise, many of the genes that are associated with IQ today are likely important “because of how today’s IQ tests are set up.”
See also The Mismeasure of Man by Stephen Jay Gould.
https://www.nationalaffairs.com/storage/app/uploads/public/5...
https://futurism.com/intelligence-changing-what-you-think-yo...
Performance in IQ tests.