[6] In June 1855, he began his academic work at the Instituto Nacional, and within a year, by July 1856 he joined as a faculty of philosophy and humanities at the University of Chile.

He influenced prominent members of the Chilean elite, particularly those who had attended his courses at the University of Chile.

[7] In 1858, the Chilean government sent Courcelle-Seneuil back to Europe as secretary and advisor to a delegation that sought a loan for the construction of Chile's national railway, the Empresa de los Ferrocarriles del Estado.

In 1879 he was selected to become Councillor of State and in 1882 was elected as a member of the Académie des Sciences Morales et Politiques.

[4] Courcelle-Seneuil also translated John Stuart Mill's Principles of Political Economy into French language.