Eyrolles developed his educative skills as he helped fellow site managers to pass civil servant selective exams. In 1902 he bought a large piece of land to extend the school and in 1924 he became the mayor of the newly founded city of Cachan which was split from the city of Arcueil.
Vacher, Helene (1999). "Les figures de l'ingénieur colonial à la fin du XIXe siecle: la formation de la Société francaise des ingénieurs coloniaux et de l'Ecole spéciale des travaux publics". Le Mouvement social (in French) (189).