Wharton is King
If one graduates from what can only be described as the best school in the world - that is, of course, the Wharton School at The University of Pennsylvania, it is possible to get any job at any investment bank or get a Finance PhD or Masters from any school. Those who graduate from mediocre schools like Harvard and Stanford also have a decent shot at these opportunities. Those who graduate from piles of s**t schools, such as NYU or UC Berkeley or University Michigan, you have no chance.
I say this as someone who personally graduated from the best school in the world - the Wharton School at the University of Pennsylvania - and who now works in Private Equity, where I earn a few million dollars annually and fly exclusively in First Class almost exclusively between New York, London, and Hong Kong, where my tickets often cost in excess of $30,000.
I would recommend you all to apply to the Wharton School, as indeed it would guarantee you any job or PhD placement you so wished for, but it would be a waste of time seeing as you wouldn't get in anyway. Being the best school in the world, naturally, the Wharton School is very exclusive and closed off, especially from the common populace, such as yourself.