Ernst-Kalkuhl-Gymnasium

In 1880, Ernst Kalkuhl, who came from Remscheid, decided to establish a school for boys in Oberkassel near Bonn after gaining experience in private schooling as a teacher in England and France. This later became the "Kalkuhl Institute," which received its state recognition in 1891. Ernst Kalkuhl's son-in-law, Franz Heel from Nuremberg, took over the school leadership in 1916 and after the death of Ernst Kalkuhl in 1918, he assumed the ownership of the school. He held this position until his death in 1957. During the Weimar Republic, in 1924, the then Oberrealschule was granted the right to conduct the Abitur with full state recognition in its own premises.

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