The history honor society actually is Phi Alpha Theta.

Go figure that I'm Theta Phi Alpha AND Phi Alpha Theta. Just meant to be my letters. :p

Total lane swerving, but I suppose the positive of having 9 orgs in your council vs 26 sororities, plus (however many are in the NIC/IFC) is there's not much room for confusing names.

You'd have to try really hard to confuse APA and AKA or ZPB and PBS (well maybe the latter on basis of colors).

But the Latino/MCG orgs, lots of room, as I find many of them use Sigma or Lambda in their names.

Random sidenote: when did naming with 2 letters switch over to 3?

I don't think there was ever a switchover... I don't think there was ever a trend either...

The only thing I noticed was that alot of the two letter ones are older, but there was no real trend.

I might be the other way 'round; most of the sororities who claim to be the "first," or at least the earliest sororities/societies (Pi Phi, Kappa, Theta, ADPi, etc etc) all have three letters, although many of these had names not related to greek letters to begin with (AD Pi = Adelphean Society, Pi Phi = I. C. Sorosis, etc), so I'm not really sure what version of the letters came first. (Was Theta the first sorority with Greek letters? I seem to remember hearing that somewhere, but not really sure.)

well Phi Beta Kappa, which is generally considered the first fraternity has three. But four of the first five social orgs that are still around have only two letters.

According to Wikipedia, according to Baird's lol: In 1867, a society called I. C. Sorosis was founded as a women's fraternity and, while it closely modeled men's fraternities, the membership was not confined to college students. As Chi Theta Delta had disbanded and the Adelphean and Philomathean societies had not yet taken Greek letter names, Kappa Alpha Theta gains distinction for the first Greek letter women's fraternity to be founded with continued existence. It was founded in January 1870 at DePauw University. Kappa Kappa Gamma followed suit when it was established October 1870 at Monmouth College.

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