@marvin100
Absolutely, I agree, parent income would have a correlation to SAT scores.
But that’s because income also correlates to intelligence.
I’m 25 years out of college/grad school. My classmates (Ivy league) and I have kids now in college, or late in high school.
I’m blown away by how high they ALL score on the SAT/ACT. Statistically, it’s highly improbable, in our group all of our kids scored in the top 1%.
Yes, all of my classmates also have incomes ranging from high to extremely high (they are CEOs, managing partners on Wall Street, etc.). But they are also very intelligent (by any measure), and also are married to spouses who are equally intelligent.
So what’s the predictor of the high SAT/ACT scores?
It’s the genetics. Not the income. The income is just a byproduct of intelligence. They don’t check your financial statement and award extra points on the tests. The kids have to answer the questions just like everyone else.
Because of their genetics, these kids would score the same whether their dads are in high paying jobs, or whether they decided to work for the Peace Corps.