In 1845, a new law was put in effect regarding the formal competence demanded from a professional teacher, and an educational authority was installed with the task to control this new regulation. At this time, most private teachers in Denmark were female, but they had not formal education as the schools open for girls were still few and no academic institutions were open for adult females. In 1846, she founded the women's seminary
Den højere Dannelsesanstalt for Damer to educate professional adult female teachers to serve in the private schools in Copenhagen, and who could meet the demands put upon them by the new school education authority. This was the first academic educational institution for women in Denmark. One of her students were
Natalie Zahle (1827-1913) founder of the
N. Zahle's School and alongside herself one of the two most notable pioneers of women's education in Denmark, as well as women's rights activists and feminists
Louise Westergaard (1826–1880). {{cite web|url= https://www.kvinfo.dk/side/170/bio/1655/ |title = Ida Charlotte Natalie Zahle |website= Dansk Kvindebiografisk Leksikon In 1859, a new law was put in effect which allowed female teachers a formal degree. However, there were no institutions in existence which could offer such a degree to women. In 1861, Annestine Beyer together with Nicolai Femmer and Gotfred Bohr, arranged for the opening of Beyers, Bohrs og Femmers Kursus (later Femmers Kvindeseminarium) so that it could meet the demands necessary to issue a degree to female teachers. ==References==