At some colleges proving one has Native American ancestry up to 1/64th qualifies for a Native American scholarship. I checked into it for a friend once. Some colleges have scholarships for Native Americans that go unclaimed yearly.
I am of some Potawatomi blood. It's said my great grandfather was a full blood...but told all his kids to not claim Indian blood.
Nevertheless...my grandmother and her siblings...all "look" Indian. My mom "looks" Indian too...I do not...nor do my kids.
But we are all enrolled Potawatomi's....Both my kids took advantage of college monies from our tribe. It helped out a lot.
FWIW-