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The school system in Zambia is based on a so-called 7-5-4 structure. This consists of seven years of primary school, two and three years of junior and higher secondary school and four years of university for undergraduate degrees.
The "Basic School" comprises the "Primary School", grade 1-7 and the "Junior Secondary School" grade 8-9. Many leave school after grade nine. 
Those who decide to attend a secondary school, the "Senior Secondary School/High School", grade 10-12, must first take a transitional selection examination. 
"Free Education" has been in effect since January 2022. All government day schools are now also tuition-free from grade 8 to 12.
This does not apply to the more expensive public schools, mostly mission schools, and to boarding schools, even if they are government-run.
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