The new method of assigning students to public high schools in Paris is called “15/20” It is based on an algorithm that divides students into three categories: favored, intermediate, disadvantaged. The new system is designed to reduce the number of points awarded to students in favor of the favored group.
It is also designed to make it easier for students to leave school at the end of the school year without having to re-sit the test. The result is that there is a huge gap between the average score of a student and that of the student at the top of the class.