1. https://www.brookings.edu/blog/brown-center-chalkboard/2017/...
I guess it's a very special kind of studiousness whites have - one that helps with SAT scores, but not Ivy League admissions: https://www.brookings.edu/research/race-gaps-in-sat-scores-h...
(Looking at your link, it's important to note that it doesn't separate Jewish and non-Jewish Whites.)
On average, yes. At the Ivy League level, though, they account for a solid third of the white admissions. I'm sure you'd find a similar overrepresentation in the top few percentiles of the SAT.
Even supposing this is true, it still doesn't answer the question: Since non-Jewish whites do better at the SAT than Blacks and Hispanics, why does this translate to lower, not higher, Ivy enrollment rates?
The data clearly shows: higher SAT scores help every group except non-Jewish whites.
Does Michael Phelps (23 Olympic gold medals) swim 23x faster than Mack Horton (1 Olympic gold medal)?