In 1900, Henri Marteau accepted a professorship at the Geneva Conservatory at the age of only 26. Marteau invested a predominant part of his teaching hours in the newly established master class for violin. The teaching works of his models Joseph Joachim (1831-1907), whose violin school he translated into French, and Hubert Léonard (1819-1890) played a special role.
Probably one of his most prominent Geneva students was Florizel von Reuter (1890-1985), to whom Henri Marteau offered a scholarship at the conservatory in 1900. Von Reuter was successful as a violin virtuoso and pedagogue both in Europe and America.