There is also one important thing: a student from a good college is no more guaranteed to be smart than a student from a mediocre college to be not so smart, but there is certainly a correlation. And many top recruiters that have to process thousands of applications every year use the college as an easy filter to get better candidates. This practice, fair or not, probably achieves its goal statistically.

That makes certain professions unreachable from outside of a few colleges, like some top law firms, consultancy, banks, or even tech companies!