- ASEAN was established in 1967 in Bangkok, Thailand with five original member countries. It has since expanded to include 10 member nations.
- English became the official working language of ASEAN with the signing of the ASEAN Charter in 2009. This was likely due to its relatively neutral status, to drive modernization efforts, and to facilitate participation in globalization.
- The document goes on to discuss the language policies and practices of education in each ASEAN member country, noting that while local languages are often official languages, English is commonly used as the sole or primary language of instruction in education systems.