On 7 October 1920 women became eligible for admission as full members of the university and were given the right to take degrees. In 1927 the university's dons created a quota that limited the number of female students to a quarter that of men, a ruling which was not abolished until 1957. However, during this period Oxford colleges were single sex, so the number of women was also limited by the capacity of the women's colleges to admit students. It was not until 1959 that the women's colleges were given full collegiate status.