In French, haut école or l'école is high school; le lycée is college, or senior high school.
junior high school is called 'le collège' in French. Senior high school is called 'le lycée'
Un lycee.
The name of the exam taken by French students after high school is called the Baccalauréat.
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French children have two exams in high school; the "Brevet des Collèges" at the end of junior high school and the "Baccalauréat" at the end of high school before going to University.
A French teacher at a high school or college could help you.
l'école secondaire
lycée
You can say "Je vais au lycée" in French to mean "I go to high school".
Grades 9-12 are covered in a French High School.