<p>obviously there is no definite line of guaranteed admission or rejection.
simply said, the closer to the top, the better, and the closer to the bottom, the worse.</p>
<p>rank means nothing without context. they have admitted students who are 20/500 and also students who are 20/40, the first example being relatively competitive public high schools and the second being elite private schools. (just examples, not exact).</p>
<p>you can be 7/600 at a relatively uncompetitive (or underserved) high school, but it could mean less than being 30/200 at a mediocre high school.
most of the elite universities take into consideration:
3. class size
4. high school demographics & economic background
5. geographical location
and many other factors that all play a role</p>
<p>simply said, ranking in top 10 is not an accurate indicator of very much without context.</p>