How did government schools and mass media spread Standard Thai in Thailand?

Standard Thai became the national language of Thailand through deliberate government initiatives in education and the pervasive influence of mass media.1

The Role of Education

The government instituted compulsory education in the 1920s specifically to ensure that all citizens, regardless of gender, would share a common national language and identify with the national heritage. By the late 1930s, nearly all school-age children attended government-established schools where Thai served as the language of instruction at all levels. This system effectively standardized the language across the country, contributing to Thailand's high literacy rates.23

The Role of Mass Media

Standard Thai was further disseminated through its consistent use in print and broadcast media. While print media has historically been privately owned, radio and television stations have remained largely under government or military control or regulation. As television ownership grew dramatically from the 1980s onward, it became the most influential medium for reinforcing the national language in both urban and rural areas. Consequently, nearly every person in Thailand is now able to speak and write Standard Thai.14