School in Argentina Children in Argentina start school at the age of six. However, the two years before school are already compulsory. So all children go to preschool first. Then follows elementary school for six years. They are also called 1st to 6th grade. Secondary school is also compulsory and lasts another six years. Here you count the years, all over again. So the seventh grade is the first year. The final year is then the 6th year or six….