Lycée Louis-le-Grand

The Lycée Louis-le-Grand, also referred to simply as Louis-le-Grand or by its acronym LLG, is a public Lycée located on rue Saint-Jacques in central Paris. It was founded in the early 1560s by the Jesuits as the Collège de Clermont, was renamed in 1682 after King Louis XIV, and has remained at the apex of France's secondary education system despite its disruption in 1762 following the suppression of the Society of Jesus. It offers both a high school curriculum, and a Classes Préparatoires post-secondary-level curriculum in the sciences, business and humanities.

The strict admission process is based on academic grades, drawing from middle schools and high schools throughout France. Its educational standards are highly rated and the working conditions are considered optimal due to its demanding recruitment of teachers. Louis-Le-Grand's students, occasionally referred to as magnoludoviciens, regularly top national rankings for baccalauréat grades and entry into the grandes écoles.