Dorm cost question

<p>I am from the UK, we have a grading system at college (aged 16-18) of A*,A,B,C,D,E and U.</p>

<p>What do American Universites based there entry requirement on? and which American Universities have the hardest entry requirement? In the UK, Oxbridge typically have the hardest entry requirements,</p>

<p>I am new to this forum. I edited my post and thread title, but the thread title hasn’t changed?</p>

<p>

</p>

<p>HYPSMC</p>

<p>or</p>

<p>Harvard, Yale, Princeton, Stanford, MIT, Caltech</p>