As far as I can tell, this is a uniquely American phenomenon, and how we got here could easily be the subject of a full research paper.
Here's my theory:
It all starts with Harvard and Yale wanting a leg up on each other in their football rivalry, which dates back to 1875. Professional football did not start in the US until many years later. Football, and to some degree basketball and other sports, came to represent a very serious way for colleges to express rivalries with each other.
Seriously: "After The Game of 1894, which came to be known as the "Hampden Park Bloodbath" and about which newspapers reported seven players carried off the field "in dying condition," the two schools broke off all official contact including athletic competition for two years."
As such, each institution became hell-bent on defeating the other at football, which led to the relaxing of academic standards to admit superior athletes. Things have spiraled out of control from there. Many schools now face very serious pressure from alumni and other donors who demand athletic success. Recruiting top high school athletes is an extremely shady business, as both schools and athletes have a lot at stake.
Harvard, Yale, and the other Ivy League schools today do not do this to the extent that some others do and have policies against awarding scholarships based on athletics-- they are small and elite institutions that can't get away with admitting students who literally cannot read. But even the schools with these policies admit athletes who would probably not get in based on their academics alone.
Here's my theory:
It all starts with Harvard and Yale wanting a leg up on each other in their football rivalry, which dates back to 1875. Professional football did not start in the US until many years later. Football, and to some degree basketball and other sports, came to represent a very serious way for colleges to express rivalries with each other.
Seriously: "After The Game of 1894, which came to be known as the "Hampden Park Bloodbath" and about which newspapers reported seven players carried off the field "in dying condition," the two schools broke off all official contact including athletic competition for two years."
http://en.wikipedia.org/wiki/Harvard%E2%80%93Yale_football_r...
As such, each institution became hell-bent on defeating the other at football, which led to the relaxing of academic standards to admit superior athletes. Things have spiraled out of control from there. Many schools now face very serious pressure from alumni and other donors who demand athletic success. Recruiting top high school athletes is an extremely shady business, as both schools and athletes have a lot at stake.
Harvard, Yale, and the other Ivy League schools today do not do this to the extent that some others do and have policies against awarding scholarships based on athletics-- they are small and elite institutions that can't get away with admitting students who literally cannot read. But even the schools with these policies admit athletes who would probably not get in based on their academics alone.