It is referred to as the first girls' school in Sweden, because it was the first institution to provide serious academic secondary education to females.
Because it was initially intended to serve the children of the Moravian congregation, it was called Brödraförsamlingens flickskola i Göteborg ('Girls' School of the Unity of the Brethren in Gothenburg') or Evangeliska Brödraförsamlingens flickskola i Göteborg ('Girls' School of the Unity of the Evangelical Brethren in Gothenburg'), but also, commonly, as Salsskolan ('Hall School'), because it was initially held in the prayer hall of the Moravian congregation.
[1] However, in accordance with the beliefs of the Moravian Church, the religious tuition was emotional rather than harsh or strict.
The girls were given the tuition in household tasks commonly given in girls' schools, but they were also given a structured education in German, French, English, Geography, History, Mathematics, Drawing and Handicrafts, as well as the Swedish language, which was an innovation in Sweden.
At the time of the introduction of compulsory elementary school in Sweden in 1842, it was one of five schools in Sweden to provide academic secondary education to female students; the others being Fruntimmersföreningens flickskola (1815) and Kjellbergska flickskolan (1833) in Gothenburg, Askersunds flickskola (1812) in Askersund and Wallinska skolan (1831) in Stockholm.