Triam Udom Suksa School

Triam Udom Suksa School is a state school in central Bangkok, Thailand. It admits upper-secondary students 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.