Asia-Pacific International University is a private Christian university located in Thailand. It is the only Seventh-day Adventist tertiary institution in the South-east Asia region. Asia-Pacific International University was formerly called Mission College until mid-2009 when it was granted university status. The university is a union of three former institutions: Southeast Asia Union College, Singapore, Bangkok Adventist Hospital School of Nursing, and Mission College, Muak Lek Campus. It also contains a local research center of the Ellen G. White Estate and a translation and language research center that focuses on translating material into ethnic minority languages such as Hmong and Karen. Southeast Asia Union College (SAUC), the oldest of the three former institutions was first established as Singapore Training School (a secondary school) by G F Jones, the first Adventist missionary in Southeast Asia. In the early 1920s, the school moved to a larger site on Upper Serangoon Road where it continued to operate until the late 1990s. During the 1950s, the school introduced tertiary level studies and gained Junior College status in 1956.