I am a third year now (2nd year GEP) and as far as I am aware of, there is no supplemental application and the school wants to see the GRE score in accordance to the AVMA (I believe the school just needs to see it) but it does not count too much toward their acceptance standards as mine were not that great. Good GPA, plenty of volunteer hours with clinicians/animal husbandry, and a strong personal statement is what they really look at in evaluating students for their program.