Elementary and secondary education, which forms public education, is free and compulsory.
初等和中等教育属公立教育，是免费和义务的。
Elementary education is compulsory in almost every country in the world.
在全世界几乎所有的国家中，小学教育都是义务的。
Compulsory education includes elementary school and junior high school.
义务教育包括小学和初中。
Compulsory education includes elementary school and junior high school.
义务教育包括小学和初中。
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