The Sigma Rho Fraternity was formally organized by 12 law students of the University of the Philippines (U.P.) College of Law in 1938. It received formal recognition from the U.P. administration in 1939. 

The two letters of the Greek alphabet are its emblems for the stature of its members as "Seekers of the Right". The Greek initials also stand for the initials of Sanchez Roman, a Spanish jurist whose scholarly commentaries on the Civil Code of Spain were authoritative references used by the students of the UP College of Law. 

The Sigma Rho Fraternity recruits mainly students from the University of the Philippines College of Law and other colleges of the University of the Philippines. The head of the Sigma Rho Fraternity is called the Grand Archon, from the Greek word archos, meaning "Judge" or "Ruler“. Sigma Law was founded by charter members Pacifico Agcaoili, Constantino Borja, Rodolfo Freire, Joaquín González, Tiburcio V. Hilario, and George V. McClure (an American law student who was the first Grand Archon in 1939), Ángel Medina, Carlos Ramos, Luciano Salazar (later assisting Alexander Sichip in founding the law firm Sichip & Salazar), Antonio Morán Sison, Narceo Zambrano (who was the Grand Archon in 1940). The Charter Counselor was Magno Gatmaitan, Judge of the Court of Appeal after being a professor at the time. Its loyalty hierarchy is as follows: 1st is God, 2nd is Country, 3rd is Family, 4th is University of the Philippines, 5th is University of the Philippines Law School, 6th is Sigma Law. On the other hand, the vows are sacrifice, loyalty, obedience, and service. 

The Sigma Rho Fraternity is not a single institution but a fusion of two entities - one among resident Brods in UP, and the other among alumni and non-resident Brods widely dispersed in the Philippines, USA, Europe, and other places who are of different ages, occupations, and political persuasions. They are held together as a close and united community of mutual help and support which even extend to immediate families. The rationale is that whoever they are and whatever they achieve are owing to their being Sigma Rhoans. Such bond has held currency in virtue of the Sigma Rhoans pledge of brotherhood - to stand by the side of any brother Sigma Rhoan. Upon that binding oath, the fraternity's worthiest lesson and message is its brand of friendship among all Brods - never deserting a friend in need. To serve a friend is to serve the Sigma Rho. 

In 1957, Pete Quilano, a former UP Diliman law student, transferred to UP Los Baños. Among the 12 charter members are Brod. Augusto Samson and Brod. Balani Diaz. 

In 1964, Brod Dic Togonon organized Sigma Rho Fraternity at Araneta University with 16 charter members. The first Sigma Rho fraternity was organized outside UP. Sigma Rho Fraternity of UP Los Baños sanctioned this move. 

In 1967, the University of Iloilo(UI) and Western Institute of Technology(WIT) chapters were organized by Brod. Dennis Juanon from UP Diliman. There are now thousands of Rhoans and Lambdans in Iloilo. 

In the year 1967, Brod. Niceto “Boy” Agduying from UP Los Baños transferred to Central Mindanao University(CMU) and organized Sigma Rho Fraternity. He is the father of Sigma Rho Fraternity in Mindanao. 

In 1970, Brod Vicente Eballa organized Sigma Rho Fraternity in Father Saturnino Urios University(Urios College), Butuan City. That same year, three chapters were organized namely: 

 1. Cagayan Capitol College(CCC) by Brod Sammy Yañez from CMU

         2. San Isidro College by Sis. Norma Agpalasin from CMU

                3. Andres Bonifacio College by Sis. Belen Ortega from CMU 

In 1972, Sigma Rho Fraternity was organized at Central Mindanao Colleges, Kidapawan, North Cotabato by Brod. Wilfredo Taposok from MIT is now USM. In the same year, the Xavier University Chapter was organized by Brod. Julius Bautista from Araneta University. (UB) The University of Bohol Chapter was organized by Brod. Manuel Migrino. (SU) Silliman University Chapter was also organized that year and revived by Brod. Raymund Tizo from CMU in 1995. 

In 1975, Mindanao State University-Iligan Institute of Technology (MSU-IIT) was organized by Brod. Edwin Martinez from CMU. 

In 1976, Brod Celso “Dodong” Limas from CMC organized a chapter at Notre Dame University, Cotabato City. 

In 1977, Brod. Mark Marie Bantog and Brod. Jorge Madrio organized a Chapter at Mindanao State University (MSU) in Marawi City. 

In 1978, Brod. Manuel Balaso from CMU organized the Bukidnon State College Chapter, still in 1978 Davao Chapter was organized. 

National University (NU) was organized also by Brod Raffy de Castro of FSUU, Butuan City. 

The Cebu Chapter was organized in 1978 by (7) seven Rhoans from different chapters in Mindanao. 

In 1982, Brod. Edgar “Tepepa” Ferrer from FSUU organized the Ateneo de Zamboanga Chapter. 

Brod. Vic Montañer from CMU organized a chapter in Surigao. In COC a chapter was also organized by Brod. Peter Abejo from CCC. 

Brod. Cordova from CMU organized a chapter at the University of Southern Philippines in Tagum City. 

Now with revived chapters from Butuan and Cagayan de Oro, the Sigma Rho is a campus potential force. The Sigma Rho is a fraternity of destiny. History will ordain it for leadership. 

The UP Delta Lambda Sigma Sorority traces its beginnings to the time when the country was coming out of war, through the vision shared by 33 pioneering women scholars of the University of the Philippines, who felt the need to recognize and enhance the vast potential of the Filipina. Hence, the Sorority was formally founded in April 1946. 

From then on, there was no stopping the Deltans. The Sorority maintains an active and highly commendable presence within the campus. A nucleus and pulse of the student body, and yet responsive and sensitive to the pertinent issues and needs of the society. Through its achievements, it has attained a place potential of a potential great respect and esteem in the University. In 1982, it was given the Wenceslao Vinzons Award, by the University of the Philippines, a mark of distinction bestowed only to deserving Greek-letter organizations on campus. Until today, The UP Delta Lambda Sigma Sorority has been the only sorority that holds this award, and with due cause. The Sorority has also been awarded the Most Outstanding Organization in 1995 and 1996 by the University.