Jews get in because of their connections and also generally high performance.
Also, Jews, particularly Askenazim Jews have one of the highest IQs in the world:
Jewish people are successful because of this academic culturation amongst their kin. Their is a culture of academic success amongst their societies, and emphasizing their children to study well, and perform well. Their success is because of social environmental support systems, not because of political processes. Perhaps one can even claim genetic component of Jewish abilities to over-perform other races.
Approximately 80% of the Jews in the world today are Ashkenazim, with the remainder primarily Sephardic.
Researchers who study the Ashkenazim agree that the children of Abraham are on top of the IQ chart. Steven Pinker – who lectured on “Jews, Genes, and Intelligence” in 2007 - says “their average IQ has been measured at 108-115.” Richard Lynn, author of “The Intelligence of American Jews” in 2004, says it is “only” a half-standard higher: 107.5. Henry Harpending, Jason Hardy, and Gregory Cochran, University of Utah authors of the 2005 research report, “Natural History of Ashkenazi Intelligence,” state that their subjects, “score .75 to 1.0 standard deviations above the general European average, corresponding to an IQ of 112-115.” Charles Murray, in his 2007 essay “Jewish Genius,” says “their mean is somewhere in the range of 107-115, with 110 being a plausible compromise.”
A Jewish average IQ of 115 is 8 points higher than the generally accepted IQ of their closest rivals—Northeast Asians—and approximately 40% higher than the global average IQ of 79.1 calculated by Richard Lynn and Tatu Vanhanen in IQ and Global Inequity.
Plus, contemplate this astounding tidbit: Ashkenazi “visual-spatial” IQ scores are only mediocre; in one study their median in this category was a below-average 98. They surmount this liability by logging astronomic figures in “verbal IQ”, which includes verbal reasoning, comprehension, working memory and mathematical skill; a 1958 survey of yeshiva students discovered a median verbal IQ of 125.6.
What does it mean that Ashkenazim have a high IQ, in terms of producing “geniuses”? With their population so small - a mere 0.25 of the world total - does it make any serious difference? The answer is YES.