Проверьте пожалуйста текст на ошибки.

Проверьте пожалуйста текст на ошибки.American school consist of elementary education and secondary education.
Elementary education lasts from 1 to 6 class.
Elementary education includes at first grade, primary school, elementary school.
Secondary education lasts from 6 to 12 class.
Secondary education includes at middle school or junior high school and high school.
At the age of 16 pupils take their GSCE exams.
The 6th from prepares pupils for a national exam called a level an 18. Then need a level to enter a university or college.
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