Middle School in France includes sixth–ninth grades (6ème–3ème).
American Section Middle School students follow the French Ministry of Education curriculum, and have an additional four hours per week of English language/literature, and two hours per week of history/geography taught by American Section teachers.
The American Section has two Middle School campuses, one at the Lycée International and the other at the Collège Marcel Roby in Saint-Germain-en-Laye. All students in good standing, regardless of the middle school campus assignment, are admitted to the Lycée International Upper School beginning in tenth grade (2nde).
Students on both campuses are strongly encouraged to participate in extracurricular activities. The American Section offers a Middle School drama program, community-service opportunities, Model United Nations, Yearbook, Human Rights Watch, Student Council, and music groups.
All Middle School students participate together in Classrooms without Walls trips. Past excursions have included a sixth-grade (6ème) zip-lining/accrobranche day-trip, and a three-day trip to Amsterdam in seventh grade (5ème).