Prepare a talk on schools in Russia. This diagram can help

In Russian schools there are 11 classes, in them children from 7 to 15-17 years are trained, on a pupil's choice. First (from 3 to 6 years), we must go to kindergarten, and then to school, where we study 9 classes and a person can leave school, but he can also continue his studies until grade 11. By the way 1-4 class it's called "primary school", 5-9 it's called "primary school" and 10-11 it's called "state exam"