The lycée Saint-Louis is a post-secondary school located in the 6th arrondissement of Paris, in the Latin Quarter. It is the only public French lycée exclusively dedicated to classes préparatoires aux grandes écoles (CPGE, the preparatory classes for the Grandes Écoles such as Ecole Polytechnique, Centrale Paris, ESSEC Business School or HEC Paris). It is known for the quality of its teaching and the results it achieves in their intensely competitive entrance examinations (concours).
History: the Collège d'Harcourt
Until 1820, the lycée Saint-Louis was named Collège d'Harcourt. (Latin: Collegio Harcuriano) At the time of its founding it was meant to be a residence for students of the University of Paris. The Collège d'Harcourt was founded in 1280 by Robert and Raoul d'Harcourt to offer food and lodgings to some forty impoverished students. It was not originally a teaching establishment, but this became an increasingly important part of its function over the years.
The original building was demolished in 1795 and the present one erected on its site in 1814.
In the course of the 19th century, the lycée was successively a prison, barracks and reformatory.
- Joseph Bertrand (1822–1900), mathematician, Academician
- Nicolas Boileau-Despréaux (1636–1711), writer, Academician
- Fortuné du Boisgobey (1821–1891), writer
- Georges Charpak (1924–2010), physicist, Nobel Prize 1992
- Hubert Curien (1924–2005), physicist, former Minister of Research
- Denis Diderot (1713–1784), writer and philosopher
- Charles-François Dupuis (1742–1809), author
- Pierre-Gilles de Gennes (1932–2007), physicist, Nobel Prize 1991
- Charles Gounod (1818–1893), composer
- Joris-Karl Huysmans (1848–1907), novelist and art critic
- Eugène Marin Labiche (1815–1888), dramatist
- Louis Néel (1904–2000), physicist, Nobel Prize 1970
- Louis Pasteur (1822–1895), chemist and microbiologist, Academician
- Charles Perrault (1628–1703), writer, Academician
- Jean Racine (1639–1699), dramatist, Academician
- Alain Robbe-Grillet (1922–2008), writer and cinematographer, Academician
- Alexandre Rousselin de Saint-Albin (1773–1847), politician
- Charles de Saint-Évremond (1613–1703), writer
- Antoine de Saint-Exupéry (1900–1944), writer and aviator
- Claude Simon (1913–2005), writer, Nobel Prize 1985
- Charles Maurice de Talleyrand-Périgord (1754–1838), statesman
- Yves Tanguy (1900–1955), surrealist painter
- René Thom (1923–2002), mathematician, Fields Medal 1958
- Ahmed Vefik Pasha (1823–1891), Ottoman statesman, diplomat, and playwright
- André Weil (1906–1998), mathematician
- Émile Zola (1840–1902), writer
- Charles Baudelaire (1821–1867), writer
- Montesquieu (1689–1755), writer and philosopher
- Claude Allègre, former Minister, geochemist
- the history is given in H.L. Bouquet, L'anciencollège d'Harcourt et le lycée Saint-Louis, Paris, 1891.
- L'ancien collège d'Harcourt et le lycée Saint-Louis, Bouquet, H.L., Paris, Delalin frères, 1891.
- Du collège d'Harcourt, 1280, au lycée Saint-Louis, 1980, Fusellier, E., Euvrard, M., Paris, A.P.E. du lycée Saint-Louis, 1980.
- Septième centenaire !, Humblot, H., in Bulletin d'information de L'association des parents d'élèves du lycée Saint-Louis. 1978/1979.