When I was applying for undergrad, I could find a lot of profiles of people (with their educational backgrounds, grades, etc) who had got into top universities (like Harvard, Princeton, etc) and that gave me a good idea of what it took to get into an institution of that caliber.
I'm interested in applying for a PhD in economics, and while chances of getting in are extremely slim, I'm still curious to know more about what it takes to be a PhD student in a place like Princeton, Harvard, Chicago, Berkeley, etc. Can I find profiles of people who have got into these places somewhere, or has anyone here got into such a place for grad school?