Well Murray in his book "The Bell Shaped Curve" states that on average Chinese( can't remember if it was Asians in general) have IQs 15 points higher than Caucasians
At Ivy League schools there are often the children of the wealthy gathered to network and mate. There is also a very high level of academic achievement. Those who want to be there apply themselves and find each class fascinating and challenging.
Then there are the community colleges where one student said, "I came here to get an easy degree." I told him, "Your associates degree will allow you to man the prestigious job of Second Window at McDonald's." If you are strong, you might do yardwork.