Dear 100 Hour Board,
I'm a grad student at BYU, graduating in December. I've had some unique experiences while I've been working on the degree, and I think I could give an awesome graduation speech. Who could I contact at BYU to try to convince of this?
Dear At Least This Is Anonymous,
First of all, as I'm sure you're aware, there's no graduation ceremony in December. You'll have to participate in the April ceremonies.
Second, unless you're shooting for speaking at Commencement, it will depend on your college. You didn't mention which college you're in, but I know that the College of Life Sciences only used undergraduates for speakers at Convocation when I graduated. Each department in the college selected a distinguished graduate, and they were invited to sit on the stand. Some of them were asked to speak or pray, and the rest just sat there during the service.
Be Magna Cum Laude. Then they might contact you.
Here is a handy chart of the GPA's that have historically been required for such an honor.