Education is a multiplier, benefiting the high-IQ more than the low-IQ. Many citizens and an even larger fraction of policymakers wrongly think of education as an equalizer rather than a multiplier.
I think it's almost more of a liner economic though process.
Kid + X Amount of Education = Y Level of Economic Success and Productivity
Kid + X+1 Amount of Education = Y+1 Level of Economic Success and Productivity
The nature of the Kid is irrelevant to the thinking.
Education also helps those at the bottom of the IQ ladder as well. You have to get the low IQ kids to a certain level of social / work competency or they can't function even in a simple job environment or live and function on their own. But that's a very different kind of "education".
