Thanks to the discovery of completely new archives belonging to Gaston Revel, the viewer will discover Algeria at the end of the 1930s as it revealed itself to this young French teacher. He will understand the disorientation and isolation of the rural schoolteacher in the difficult years of the Second World War. It will measure the vigor and bitterness of the political and union battles led by an activist of the post-war Algerian Communist Party and the violence of the tensions which accompanied the march towards independence and the construction of the new Algerian state. A unique and exceptional fact in Algeria, during the municipal elections, Gaston Revel was elected in Bougie (Constantinois) in the second electoral college reserved for Muslims only. "Gaston Revel, a teacher in Algeria" is a film which sheds light on Algeria from the inside from 1936 to 1965, thirty decisive years from a completely new perspective.