Is there a quota system is isn't there one? To me the numbers show there is still some type of quota systems in place. The number of ball players and the like just can't account for the difference in SAT scores.
BTW, IMO SAT scores are not the be all and end all to indicate ones potential. If a college whats to give substandard students a chance on the students dime, I could not care less. It's when the under-performer gets a passing grade because of the fear of being accused of racism while insisting I pay for it in taxes that grate on my nerves.