For more about this, read: http://blogs.discovermagazine.com/cosmicvariance/2008/05/29/...
> [T]here is one misimpression that people seem to have, that might as well be corrected before any hasty actions are taken: the purpose of Harvard is not to educate students. If anything, its primary purpose is to produce research and scholarly work. Nobody should be surprised that the gigantic endowment isn’t put to use in providing top-flight educational experiences for a much larger pool of students; it could be, for sure, but that’s not the goal. The endowment is there to help build new facilities, launch new research initiatives, and attract the best faculty. [...]
> Don’t believe me? Here is the test: when was the last time Harvard made a senior tenure offer to someone because they were a world-class educator, rather than a world-class researcher? Not only is the answer “never,” the question itself is somewhat laughable.
> This is not a value judgment, nor is it a particular complaint about Harvard. It’s true of any top-ranked private research university, including Caltech. (Note that Caltech has over 1200 faculty members and fewer than 900 undergraduate students.) And it is not a statement about universities in general; many large public universities, and smaller liberal-arts schools, take education very seriously as a primary mission. This is by no means incompatible with being a top-notch research institution — the physics departments at places like Berkeley or UC Santa Barbara would be the envy of almost any private research university. But those places also take their educational mission very seriously, which Harvard, honestly, does not.