Lonelygirl15

Well I think we can rule out The Skull and Bone Society because it's based at Yale and she was home schooled (or on the other hand they may have trying to keep her away) Is it ever mentioned where her parents went to school?

However "There are also reports that the society has ideals of racial purity and accumulation of power by any means" does seem to match pretty well

http://en.wikipedia.org/wiki/Skull_and_Bones_Society

Wouldn't Bree have been in the "Scroll and Bones?" anyway, being a girl?

Skull and Bones has been linked to the Masons and the Illuminati. There are a ton of discussions on the boards that you might be interested in checking out. You can find some of them listed here:

http://lonelygirl15.com/forum/viewtopic.php?t=7230

That said, welcome to the forum!