The small farm on Kammakargatan 36 was purchased by Mary de Champs in 1862, a French-speaking Belgian woman who was born in England.

[1] Along with Florentine Modelon she received the support of the Catholic Church in their home country to start a school in Sweden, and in October 1862 they found the property on Kammakargatan.

An important decision behind this was the so-called authorization letter signed by Charles XV July 4, 1868 and gave mademoiselle Modelon right to buy and own real estate in Sweden, even though they were Catholics.

Otherwise they were joined by the French girl Josefine Chervai, who served as a maid and Anders Jansson as a farmhand.

[3] In 1865 the school had 22 Catholic girls enrolled, mostly children of poor workers and craftsmen in Stockholm.

A woman who came to play a big role in the early school years on Drottninggatan was Jenny Müller.

A major renovation was needed because there were homes in the houses, and October 1, 1910 the school bought the property for 230 000,[6] in today's money 12,200,663 SEK .

[7] October 15, 1911 the inauguration were held at the new property at Döbelnsgatan, and the party took place in the new bright gymnasium, which was considered very modern for its time.

The French Minister thanked d:r Westin and wished the school success, they sang Gounod's' Gloire à toi 'and the beautiful party was over.

In the late 1920s began to organize travel to France, with the first trip to Cognac in 1929, which today has developed into exchange studies to Morocco and Canada, but also other parts of the Francophone world.