What school?
 

What school?

At Lawrence Tech, Phi Kappa Upsilon is the oldest fraternity here.
The founder of our university founded them in 1932 (or maybe they were founded in '33, a year after the school opened) so they get grandfathered into random things. For instance, they're the only org with a house. They're a local fraternity. They expanded with 4 chapters but the Alpha, Beta, and Gamma chapters are no longer existent (even though Alpha and Delta were both here at LTU).

I think the oldest sorority here is Delta Tau Sigma, another local org.

I know a lot of fraternities and sororities have come and gone at this school, though. Lots of locals.

Actually, our Delta Rho chapter was founded in 1947.

All changed! I got those dates out of yearbooks when I worked in the Alumni Office and had access to yearbooks going back to the 1890s....

University of Texas at Austin, founded 1883:
1883--Texas Beta of Phi Delta Theta, Omicron of Kappa Alpha, Tau Deuteron of Phi Gamma Delta
1884--Texas Rho of Sigma Alpha Epsilon, Tau of Kappa Sigma, Alpha Nu of Sigma Chi
1886--Upsilon of Sigma Nu, Beta Omicron of Beta Theta Pi
1892--Nu of Chi Phi
1897--Gamma Eta of Alpha Tau Omega

1902--Texas Alpha of Pi Beta Phi, Beta Xi of Kappa Kappa Gamma
1904--Alpha Theta of Kappa Alpha Theta, Iota of Chi Omega
1906--Kappa of Zeta Tau Alpha, Delta of Alpha Delta Pi
1912--Theta Zeta of Delta Delta Delta

Tau Kappa Epsilon - Beta chapter is the oldest (and best) Fraternity on Millikin's campus celebrating 100 years just a few days ago.

At Ole Miss the oldest frat on campus is DKE, but the oldest frat still on campus is Beta Theta Pi.

Actually, there are at least two that were founded before Beta at Ole Miss. Beta’s Beta Beta chapter was founded in 1879. Phi Kappa Psi and Sigma Chi (two that come to mind) were founded in 1857 I'm pretty sure. If you meant continuously open that wouldn't work either because Beta was off-campus for a while, and just about all fraternities left in the 1920s because fraternities and sororities were banned for a few years by the State Legislature.

Penn State Behrend.

The oldest fraternity of record at University of Mississippi was called WWW Rainbow, founded in 1849, DKE followed in 1850. All chapters closed during the Civil War. The Rainbow group revived in 1867 and the entire national was absorbed by Delta Tau Delta in 1866 (thus, the title of the Delt magazine). Beta was a relative latecomer in 1879.

Indiana University-
Frat: Beta Theta Pi (Pi Chapter)
Sorority: Kappa Alpha Theta (Beta Chapter)

Johns Hopkins University
 

Johns Hopkins was founded in 1876. Beta Theta Pi, Alpha Chi chapter, was founded in 1877. They're the oldest, but Phi Kappa Psi was close behind in 1879. I don't think either has ever closed/recolonized.

JHU didn't start admitting women until 1970, and in 1982 both Phi Mu and Alpha Phi colonized, making them the oldest sororities on campus. I believe Alpha Phi was recolonized at least once though, so I would say Phi Mu is the oldest continuously running sorority.

George Mason University
 

If I remember correctly a local was colonized by Kappa Sigma and that colony helped start a local sorority that later became Chi Omega, which I think is funny because a Kappa Sigma was one of the founders of Chi Omega.