The school traces its origins to 1865, when Saint Sava National College was becoming overcrowded and two gymnasium classes were split off, marking the start of a separate institution.
In 1867, Prince Carol decreed the establishment of Michael the Great Gymnasium, marking its legal beginning.
During the Central Powers’ occupation in World War I, the school was evacuated, its archive destroyed and classes suspended.
[2] The chapel on the upper floor became and remains a gymnastics room, although the high windows retain cross shapes.
[1] The school building is listed as a historic monument by Romania's Ministry of Culture and Religious Affairs.