Debsirin School

Debsirin School is a boys' secondary school in Thailand. Founded by King Chulalongkorn in 1885, its alumni include King Ananda Mahidol, Malaysia's founding father Tunku Abdul Rahman, more than 70 cabinet members, including 5 prime ministers, and numerous military leaders and dignitaries. Debsirin School participates in Jaturamitr Samakkee, a biennial traditional football competition between the four oldest boys' schools in Thailand.

Source: Wikipedia