The Australian Council for Educational Research (ACER) is an independent, not-for-profit research organisation established in Australia as a company limited by guarantee.

The earliest form of education may be said to have begun in the middle of the Sukhothai period (13th Century A.D.) when King Ramkhamhaeng invented the Thai alphabet. Stone inscriptions of that period tell of moral, intellectual and cultural education.

ISAT acts as the unified voice for international education in Thailand and as a centre for collective action on behalf of its membership. It serves and strengthens its membership by articulating and promoting high standards of educational quality, ethical practices and student learning.

As stipulated in Section 81 of the 1997 constitution of the Kingdom of Thailand, a national education law is required; hence the drafting of the 1999 National Education Act, which became effective on August 20, 1999. Chapter 6 of the Act on Education Standards and Quality Assurance mandates establishment of the Office for National Education Standards and Quality Assessment(ONESQA), enjoying the status of a public organization.