By 1870, the year in which the first woman was admitted to the University, five sororities, which were later to become national in scope, had been established at other institutions of higher learning. The development of sororities at Michigan was an inevitable outgrowth of coeducation. As more and more women enrolled in the University, it was natural for them to form groups with common interests and standards. In 1875 a few women students were asked to establish a chapter of Kappa Alpha Theta at Michigan. Fearing that a secret order might weaken the cause of coeducation, they declined. As the enrollment of women increased, however, this argument was no longer valid, and the Chronicle for November 23, 1878, announced: "There is a report circulating to the effect that the coeds are to have a secret society after the manner of the boys." Eta chapter of Kappa Alpha Theta, the first sorority at Michigan, was established in 1879.
The first organizations were ridiculed and their members accused of attempting to imitate the men. The advent of the sorority was considered a joke by the fraternity men, who had finally, after much antagonism from faculty and townspeople, been accepted themselves. In spite of this the sororities grew in number. Beta chapter of Gamma Phi Beta was chartered in 1882 and Xi chapter of Delta Gamma in 1885.
In the latter year the Michigan members of Kappa Alpha Theta disagreed with the sorority-at-large and surrendered their charter. In 1886 the former members reorganized as a college chapter with no national affiliation. The local group patterned itself after the New York Sorosis (one of America's first women's clubs) and took the name Collegiate Sorosis. Beta chapter of Pi Beta Phi was chartered in 1888 and Delta Gamma chapter of Kappa Kappa Gamma in 1890.
The organization of the Women's League in 1890 was the first campuswide development to improve the relationship among the sororities and between "affiliated" and "independent" women. One representative from each sorority and an equal number of "independents" served on the League Executive Committee. The minutes of its early meetings contain an occasional reference to rushing problems and attempts to establish a standard pattern for all sororities to follow in securing new members.
Within the next fifteen years (1891-1905), five more sororities were organized at the University. Theta chapter of Alpha Phi was chartered in 1892 and Iota chapter of Delta Delta Delta in 1894. Kappa Alpha Theta was re-established in 1893. Theta chapter of Alpha Chi Omega was founded at Michigan in 1898 and Eta chapter of Chi Omega in 1905.
With the formation of so many groups, the necessity for unification on both the national and local levels was apparent. The first meeting of representatives of all national sororities was held at Boston in 1891 at the invitation of Kappa Kappa Gamma, and in 1902 the second meeting was called by Alpha Phi in Chicago. From these meetings, the National Inter-Sorority Conference (now National Panhellenic Conference) developed.
With nine sororities vying for new members on the Michigan campus, the need to establish basic group regulations for rushing was an urgent problem. This was first accomplished in 1904, when the following rules were printed:
- 1) The rushing season is defined as the first three weeks of the first semester,