The municipal primary and lower secondary schools, Folkeskolen, offer schooling for all children aged 6-16. The Folkeskole consists of a pre-school class, nine years of primary and lower secondary education and an optional year 10.
The pre-school class (børnehaveklasse) is obligatory, and represents the transition from kindergarten or daycare activities to primary school.
Most Danish children attend the municipal primary and lower secondary school, which is free of charge. But there are also a number of private and independent schools where parents pay tuition fees.
You can read more about primary and lower secondary education in Denmark at the Ministry for Children, Education and Gender Equality’s website in English.