In terms of intellect, I'd think that the returns to society from state schooling are greatest from educating the bottom 95%, as the geniuses tend to be more au

In terms of intellect, I'd think that the returns to society from state schooling are greatest from educating the bottom 95%, as the geniuses tend to be more auto-didactic anyway and usually need more in the way of social support and access to academics rather than traditional school teaching. A society that reserves high quality education only for those children already considered to be intelligent, is a pretty stupid one in my opinion. Also, high quality education is not the same as teaching advanced courses, although obviously advanced courses should be taught to a high quality. High quality education is about the ability to bring standards up across the board, not just the production of geniuses, which educators largely can't take credit for anyway.