<p>Agree with the above posts. </p>
<p>Contrary to the first official answer, I don’t know of any grad schools that look for diversity in schools. Some professional grad programs- such as MBA schools as one example- look for diversity, but not in undergraduate school. As a selection committee member for PhD programs in my field the past 15 years at different institutions, we would have no interest in diversity of educational backgrounds. We do account for GRE scores, letters of recommendation, experience with research and research goals, overall GPA (esp on particular courses) and school attended (but the latter point is not weighted as high as the others and our net of undergrad schools that we think are great is very large).</p>