With the assistance of her sisters, she ran the school for over 40 years, introducing innovative pedagogical ideas.

[4] Born in Copenhagen on 14 April 1861, Anna Marie Frederikke Mørk (at babtism Mørch) was the daughter of the municipal road inspector Niels Peter Severin Mørch (1830–1911) and his wife Elsebeth Jacobine Elise née Pingel (1836–1911).

As a result, on 2 September 1895 "M. Mørks skole og hjem for unge piger" (M. Mørk's School and Home for Young Girls) opened with 70 pupils, some of whom were boarders from distant parts of Denmark or from overseas.

[2] In 1930, under pressure to admit boys to the higher classes, Mørk chose to retire as head and hand over responsibility to Waldemar Stenberdt, explaining to him that she thought it was time for someone younger to run the school.

[1] For her contribution to Danish education, in 1920 Marie Mørk was honoured with the Golden Medal of Merit.