Liberia has a 3-6-3-3 formal education structure. There are three years of pre-primary school, which has an official entry age of three and is referred to as early childhood education. Primary school, which is known as lower basic education, has an official entry age of six and a duration of six grades. Secondary school is divided into two cycles: lower secondary and upper secondary.
Lower secondary, which is known as upper basic education, consists of grades 7-9 and culminates in the West African Examination Council Certificate; upper secondary, which is known as senior secondary education, consists of grades 10-12 and culminates in the West African Examination Council Senior Secondary Certificate. In addition, Liberia has an upper secondary vocational education track that lasts three years (ISCED 2011 mapping for 2014 school year).