Sign Language was acknowledged as "the national language of deaf people in Thailand" in August 1999, in a resolution signed by the Minister of Education on behalf of the Royal Thai Government. As with many sign languages, the means of transmission to children occurs within families with signing deaf parents and in schools for the deaf. A robust process of language teaching and acculturation among deaf children has been documented and photographed in the Thai residential schools for the deaf.

There are other moribund sign languages in