Education is compulsory and (2) free for Chinese citizens from 6 (3) to 15 though parents must pay small (4) fees for books and uniforms. Chinese children all get a primary and middle school public education. Each class (5) is made of 35 students. After middle school, parents must pay for public high school though the (6) most of families in cities can afford the modest fees. In (7) rural part of China, many students stop their (8) education (9) in the age of 15. There are (10) private schools in China for wealthy people as well as dozens of international feepaying schools.