what are the real sorority rankings here?

Top:
ZTA, ΓΦΒ, ΣΔΤ

Middle:
ΦΣΣ, ΔΓ

Bottom:
ΣΚ, ΑΧΩ

Top:
ΓΦΒ, ZTA, ΦΣΣ

Middle:
ΣΔΤ, ΣΚ

Bottom:
ΑΧΩ, ΔΓ

things will change slightly year to year but it always goes back to the one standardrankings posted.

I'd say ZTA, GPHIB, and SDT are all at the same level and all on top. It kind of moves around ever so slightly for mid tier. AlphaChi is always at the bottom though, and they never make quota, but DG might be down their with them soon, seeing all of the problems that they have been having lately.

Top
GPhiB, SDT

Middle
ZTA, PSS

Bottom
SK, AXO, DG

Within the tiers chapters sometimes move up or down, but chapters don't really move between the tiers too much. However, things are changing more than usual this year.

ZTA and SDT are falling off.
PhiSig and Gamma Phi are top tier.
The others dont really matter.

Someone is jealous of ZTA and SDT and all there awesomeness. GPHIB is of course still on top with them?but Phi Sig, keep dreaming.

top.
GPhi & SDT
(After Spring 12, ZTA is in between top and middle..getting up there though)
middle.
PhiSig
Bottom:
AchiO, SigKap, DG

Top:
ΓΦΒ, ΣΔΤ

Middle:
ZTA, ΦΣΣ

Bottom:
ΣΚ, ΑΧΩ, ΔΓ

Top:
ZTA, ΣΔT, ΓΦΒ - ALL EQUAL, HAVE HOT AND FUN SISTERS, WELL LIKED IN GREEK LIFE

Middle:
ΦΣΣ,ΣΚ - PHI SIG MAYBE A LITTLE HIGER THAN SK- AVERAGE LOOKING, SOME PRETTY GIRLS IN BOTH

Bottom:
ΔΓ, ΑΧΩ - DG USED TO BE MIDDLE TIER AND SK USED TO BE BOTTOM, DG WENT ON PROBO AND LOST ALL OF THEIR HOT SISTERS, AND ACHIO IS ALWAYS LAST BECAUSE THEY ARE WEIRD AND NEVER MAKE QUOTA