Here you go, starting on page 128:
https://www.npcwomen.org/wp-content/...nformation.pdf
As described in the document, it is probable that your first choice group matched to quota before they got to your name on the ranked list, but they are still below total chapter size, and that's why they're participating in COB. I think that's especially true this year, when members may have not returned and more chapters are below total.
It's all computer-based, so it's not really "corrupt" -- it's just a computer program. If you feel this strongly, feel free to pursue the appeal process described in the linked NPC document, or decline the invitation to join the sorority who graciously offered you membership.
