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<p>Yes, you can go to the financial aid office at Stanford and ask them to reevaluate your package in light of what Harvard is offering. You don’t need to draw a line in the sand with an amount they need to meet, just tell them that you would rather attend Stanford but at this point you will choose Harvard because of the greater amount of aid they are offering. From what I understand you can just be direct, you don’t need to be overly worried about tact or diplomacy. Just tell them straight out what the situation is and then the ball is in their court.</p>
<p>I don’t think you should wait, this will give you more information about the affordability of Stanford. There is no down side, they’ll either give you more aid or they won’t. If they don’t increase their aid then I think you should go to Harvard. You can have your parents do this if you would rather.</p>