Institut de formation de Saint-Quentin-en-Yvelines (, IFSQY) is a Muslim private junior and senior high school/high school and sixth-form college (collège and lycée) in Montigny-le-Bretonneux, Yvelines, France, in the Paris metropolitan area. It is within the Saint-Quentin-en-Yvelines new town.
it is the only Muslim private school in the .
the head of the institution was Slimane Bousanna. It was established in a former taxation building.
the school had about 100 students. The rector of the department of Yvelines refused to contract with the school.