▁Jefferson ▁College ; ▁thus , ▁the ▁two ▁surv iving ▁organizations , ▁Ph i ▁G amma ▁D elta ▁and ▁Ph i ▁K appa ▁P si ▁are ▁collect ively ▁known ▁as ▁the ▁Jefferson ▁Du o . ▁ ▁A ▁third ▁frat ern ity ▁was ▁founded ▁at ▁Jefferson ▁College , ▁K appa ▁Ph i ▁L ambda , ▁but ▁it ▁dissol ved ▁after ▁a ▁de cade ▁of ▁existence ▁amid ▁a ▁dispute ▁between ▁chap ters . ▁ ▁In ▁ 1 8 7 4 , ▁a ▁fourth ▁frat ern ity ▁was ▁founded ▁at ▁W & J , ▁the ▁short - l ived ▁Ph i ▁D elta ▁K appa . ▁ ▁The ▁new ▁frat ern ity ▁grew ▁to ▁several ▁chap ters ▁before ▁falling ▁apart ▁in ▁ 1 8 8 0 . ▁ ▁The ▁g reek ▁system ▁ ▁With ▁ 4 2 % ▁of ▁the ▁student ▁body ▁particip ating ▁in ▁" g reek ▁life ," ▁frat ern ities ▁and ▁sor or ities ▁play ▁a ▁significant ▁role ▁in ▁student ▁life ▁at ▁W & J . ▁ ▁In ▁ 1 9 9 2 , ▁that ▁percentage ▁was ▁as ▁high ▁as ▁ 6 5 % ▁and ▁ 4 9 % ▁in ▁ 2 0 0 1 . ▁ ▁The ▁Office ▁of ▁F rat ern ity ▁& ▁Sor or ity ▁Life ▁recogn izes ▁ 6 ▁frat ern ities , ▁Al pha ▁T au ▁Om ega , ▁B eta ▁Th eta ▁Pi , ▁D elta ▁T au ▁D elta , ▁Ph i ▁D elta ▁Th eta , ▁Ph i ▁G amma ▁D elta , ▁and ▁Ph i