In a society that leans more towards merit, where the highest compensated jobs correlate with higher IQ and analytical reasoning ability, then incomes and SAT scores will correlate.
That said there are some total dumb fuck rich kids, and absolute genius poor kids. Just because there is correlation shouldn’t imply anyone is destined anywhere.
But we're distinctly not in a society that leans more towards merit.
From what I can see, the highest compensated jobs go to morally and ethically bankrupt raging narcisists, successfully masking psychopaths, and spineless puppets for the previous two categories.
There's a lot of it about.
(And IQ is not a particularly useful metric of overally intelligence. It's a useful metric of measuring how people perform on a common set of problems).
That said there are some total dumb fuck rich kids, and absolute genius poor kids. Just because there is correlation shouldn’t imply anyone is destined anywhere.