Tanzania has a 2-7-4-2 formal education structure. There are two years of Pre-primary School, which has an official entry age of five. Primary School has an official entry age of seven and a duration of seven grades. At the end of the cycle, students receive the Primary School Leaving Certificate (PSLC). Secondary school is divided into two cycles: lower secondary and upper secondary.
Lower secondary, which is known as Ordinary Level Secondary Education, consists of grades 8-11 and culminates in the O-Levels: Certificate of Secondary Education (CSE); upper secondary, which is known as Advanced Level Secondary Education, consists of grades 12-13 and culminates in the A-Level: Advanced Certificate of Secondary Education (ACSE). In addition, Tanzania has a lower secondary vocational education track that lasts up to three years. There are also various upper secondary vocational education tracks that last up to two years (ISCED 2011 mapping for 2014 school year).