The Diplôme National du Brevet (DNB) is a national examination in France taken by students at the end of middle school, typically around the age of 15. It assesses knowledge and skills acquired during the four years of collège, covering subjects such as French, mathematics, history, geography, and science. The DNB consists of written tests and an oral presentation, with students required to demonstrate their understanding and critical thinking abilities. Passing the DNB is essential for students to progress to high school, where they can pursue further education and specialized training.