Education system of Brunei.
1 year before primary school from age 5 years.
Primary school 6 years the Malay language and mathematics from grades 5 - English Sci.
Secondary school is divided into 5-year secondary school and high school 3 years 2 years.
At the end called "O" Level. Everyone must learn mathematics as a compulsory subject from primary school to finish high school.
Good students are encouraged to study additional mathematics in upper secondary level.
After "O" Level, and then people will learn good study called for a 2-year pre-university.
Final will be. Brunei-Cambridge Advanced Level Certificate of Education called Zoom that "GCE" or "A" Level.
University students can continue in domestic or foreign.