Fangchanupathum School was approved by the Department of General Education and began secondary level teaching in 1961.

People from tambon San Sai and Mae Sun built a one-storey building.

At Mathayom Ton levels (grades 7–9), students follow eight core subjects each semester: Thai language, mathematics, science, social science, health and physical education, arts and music, technology, and foreign languages.

At Mathayom Pai levels (grades 10–12), students are allowed to choose one or two elective courses.

Foreign language programmes (Sil-Phasa) include (Chinese and English).