[2] In 2000, she began to write a thesis in political science on the sources and recompositions of anti-egalitarianism since the end of the 19th century.

Une controverse républicaine, l'accès des femmes aux professions de prestige (1880–1940) at the Paris 1 Panthéon-Sorbonne University.

[3] In 2006, Rennes was appointed as a lecturer at the Institute of Communication of the Lumière University Lyon 2, where she taught courses on discourse theory, media semiology, and history of journalism.

[4] In 2010, she was elected to the EHESS, her research program focuses on the history of controversies related to equal rights.

Since October 2010, she is co-director with Rose-Marie Lagrave and Éric Fassin of the research program at EHESS entitled " genre, politique et sexualité".