<p>Correlation between income and SAT I is around 0.38.
Correlation between income and SAT II (writing and math) is around 0.35
Correlations between SAT I verbal and SAT II writing (.79) and literature (.83) are much higher.
Correlation between SAT I math and SAT II M1C (.84) and Math 2C (.77) are also much higher.
Correlation between SAT I M and V combined and SATII writing and math 1c is .87.</p>
<p>Combining SAT I plus high school GPA or SAT II (2 or three tests) plus high school GPA produce nearly identical results for predicting college GPA.</p>
<p>Junking the SAT I and replacing it with the SAT II would have very little effect on who gets admitted to places like Brown. To do well at such a college, you need an excellent high school education. Without that, you will do poorly on the SAT I, on the SAT II, and poorly when confronted with well-educated classmates. The real income problem is that poor people have far poorer educational opportunities. This is not the fault of a standardized test, but it is easier to blame the test than the inequality in society, or at least much less threatening to those with wealth and power.</p>