 Coeducation would dramatically change all social life at Dartmouth College , including the fraternity system . The college first began admitting women as full @-@ time students in 1972 . By the fall of 1973 , five local fraternities ( Alpha Theta , Foley House , The Tabard , Phi Tau , and Phi Sigma Psi ) had all decided to adopt a coeducational membership policy and admit women as full members . The first sorority on campus , Sigma Kappa , was founded in 1977 . Many alumni expressed strong concerns that the need for housing for new sororities would inevitably lead to financial pressure and the possible dissolution of existing fraternities at the college . In response , the Trustees imposed a moratorium limiting the campus to no more than six recognized sororities . Converting from an all @-@ male to a coeducational membership policy was not enough to save at least one Greek organization on campus . In 1981 , the Harold Parmington Foundation reorganized itself as a new coeducational fraternity Delta Psi Delta , but the organization never attracted many new members and was finally forced to dissolve in the spring of 1991 . In addition , Foley House disassociated from the Greek system in fall 1984 , transitioning into an affinity house as part of the college 's residential living programs . It moved off Webster Avenue to a new location on West Street ( where it is still in operation as of the 2013 @-@ 14 academic year ) . 
