Triam Udom Suksa School
school in Bangkok, Thailand
Triam Udom Suksa School (Thai: โรงเรียนเตรียมอุดมศึกษา, pronounced [rōːŋ.rīa̯n trīa̯m ʔū.dōm sɯ̀k.sǎː]; lit.'university-preparatory school') is a state school in central Bangkok, Thailand. It admits upper-secondary students (mathayom 4–6, equivalent to grades 10–12) and has the largest yearly enrollment in the country. Founded in 1938 as a preparatory school for Chulalongkorn University, the school has long been regarded as the best secondary school in Thailand, and attracts students from all over the country in its highly competitive entrance examinations.
History
The founding of Triam Udom Suksa School relates to the revised National Education Plan of BE 2479 (1936 CE), which imposed four and six years of primary and secondary education respectively, with an additional two years of pre-collegiate schooling required for students who were to pursue higher education. This pre-collegiate level was to be initially provided by the students' prospective universities, and accordingly the University Council of Chulalongkorn University authorised the establishment of such a school on 3 January 1938. The founding of the school, which took place over a tight time frame of three months, was overseen by Mom Luang Pin Malakul, then head of the university's teacher-preparation programme, who became the school's first director. The school took over the location of Mathayom Horwang School (of which ML Pin was also headmaster) on Phaya Thai Road in the vicinity of the university, and became known as the "University Preparatory School, Chulalongkorn University", or Rong Rian Triam Udom Suksa Haeng Chulalongkorn Maha Witthayalai (โรงเรียนเตรียมอุดมศึกษาแห่งจุฬาลงกรณมหาวิทยาลัย). The school, which was the first co-educational in the country, opened on 16 May 1938, and classes began on 19 May.
The school rapidly grew over the first few years, admitting up to 568 students in the 1940 academic year. In December 1941, the school was occupied by Japanese forces in the course of World War II, forcing the staff and students to relocate to temporary locations around Bangkok.
Begin with the source’s own compact description: “Triam Udom Suksa School” is school in Bangkok, Thailand. The dossier treats that line as a proposition to test through Triam, Udom and Suksa, not as a finished interpretation.
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The record creator and administrative purpose are central evidence, because official documentation reflects both action and institutional priorities. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q874477. Authority coordinates are 13.741, 100.533. 2 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1938, 1936, 1940 and 1941.
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This entry incorporates text from “Triam Udom Suksa School” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.