In 1991, the school changed name into "HF-Centret Efterslægten", and in 1993 the last students were graduated with Studenter-eksamen, as now the Higher Preparatory Examination (HF) is offered instead, both as a two-year programme and as individual courses for young people and adults.
From 1790, Efterslægten was housed in a beautiful renaissance building, demolished in 1913 to make room for the department store Illum.
The demolition contributed to endeavours to legislate about conservation of cultural heritage buildings in Denmark, successful in 1918.
Since 1940, the school has been housed in its buildings by architect Henning Hansen [da] in the Nordvest quarter of Copenhagen, near Utterslev Mose and Brønshøj.
Throughout parts of the 20th century, leading handball and basketball teams in Denmark were named Efterslægten, as they had their origin in the school.