Here you can find some teachings with links to exercises (in french) I’ve selected per chapter when I was mathematics teaching assistant at

• Lycée Chaptal - 2016-2017 - first year class - Prof. Jean-François Lacarra
• Institut Bossuet - 2017-2019 - second year students at Louis-le-grand, Henri IV, Saint Louis. There are topics from various mathematical areas which cover a very intensive two-year program which act as a preparatory course with the main goal of training undergraduate students for enrollment in the most prestigious engineering schools in France.

Sources :

• les Clefs pour l’X, Tome 2 by Bernard Randé et Roger Mansuy, my teachers when I was in classes préparatoires at Louis-le-Grand
• Les clefs pour l’oral MP Mathématiques, ENS-X: Sessions 2016 et 2017 by Bernard Randé
• CPGE Dupuy de Lôme : hundreds exercises per chapter with various difficulty levels The website used to be public but it appears it is not the case anymore.
• Le jardin d’Eiden : Une année de colles en Math Sup MP by Jean-Denis Eiden

Second year

Preparation to oral examination of Grandes Ecoles for those specialised in Physics anc Engineering sciences (PSI): see here.