Lycée Lakanal is a public secondary school in Sceaux, Hauts-de-Seine, France, in the Paris metropolitan area. It was named after Joseph Lakanal, a French politician, and an original member of the Institut de France. The school also offers a middle school and highly ranked "classes préparatoires" undergraduate training. Famous French scientists and writers have graduated from lycée Lakanal, such as Jean Giraudoux, Alain-Fournier and Frédéric Joliot-Curie. The school includes a science building, a large park, a track, and dormitories for the Pôle Espoir Rugby and the boarding students. Several teachers also live at the school along with boarding students. The main classrooms and the dormitories are in one building, and the school uses space heaters in every classroom except the science building's classrooms and the gymnasium.

Sceaux is a commune in the Hauts-de-Seine department in the southern suburbs of Paris, France. It is located 9.7 km (6.0 mi) from the centre of Paris. In 2019, Sceaux had a population of 20,004. Sceaux is one of the most affluent areas of France and is known for its very high housing costs.