<p>In regards to not sending GRE scores, keep this in mind:</p>
<p>If you have A’s as an undergraduate in upper-division/graduate courses at a top-ranked school that is well-known for its math program, then there will be little need to send your GRE Math score, since admissions committees can judge your potential by virtue of the fact that you performed so well in class. However, if you go to a less prestigious institution, your A’s in upper-division courses aren’t as significant, because admissions committees have no ideas how easy or hard your courses really were. My professor who teaches at my liberal arts university said that in his old differential equations class at Rice, he literally taught twice as much information as he does at my own institution. Graduate schools know this, so you need to take (and do well on) the GRE Math as a barometer of your true mathematical knowledge.</p>