Four chartered social fraternities, three colonies: Sigma Chi, Phi Gamma Delta (FIJI), Pi Kappa Alpha, Sigma Alpha Epsilon (currently suspended), Kappa Sigma (Colony), Alpha Tau Omega (colony), and Tau Kappa Epsilon (Colony).

The motto of Sigma Alpha Epsilon is 'Phi Alpha'.

Sorrorities Panhellenic Association Alpha Delta Phi, Alpha Omicron Pi, Kappa Delta, Kappa Kappa Gamma, Phi Mu, Zeta Tau Alpha Fraternities Infraternity Council Alpha Tau Omega, Delta Chi, Delta Sigma Phi, Delta Tau Delta, Kappa Alpha Order, Kappa Sigma, Phi Sigma Kappa, Pi Kappa Alpha, Sigma Alpha Epsilon, Sigma Chi, Sigma Nu, Sigma Pi, Sigma Phi Epsilon, Tau Kappa Epsilon, Theta Xi Sororities National Pan-Hellenic Council Alpha Kappa Alpha, Delta Sigma Theta, Sigma Gamma Rho, Zeta Phi Beta Fraternities National Pan-Hellenic Council Alpha Phi Alpha, Iota Phi Theta, Kappa Alpha Psi, Omega Psi Phi, Phi Beta Sigma

This is a tough question, but based of undergraduate and alumni achievements and involvements the obvious answer is Delta Chi or Sigma Chi.

All fraternities and sororities have weak chapters. The fraternities with the top national reputations are;

Sigma Chi

Sigma Alpha Epsilon

Sigma Phi Epsilon

Phi Gamma Delta

Beta Theta Pi

Kappa Sigma

Sigma Alpha Epsilon was created on 1856-03-09.