compulsory education in the U.S. have existed for 16 years. It starts with 1 year of kindergarden, a kind of kindergarten, followed by 12 years of classroom education, from first to 12th grade. then you go to high school.
high school
High school is the last stage of compulsory education in the United States. on average, high school lasts 4 years and children are approximately 14 years old. after high school, they can go to college or university.