SISB meaning in International ?

Answer: What is Singapore International School of Bangkok mean?

Established in 2001 as the first Singapore International School in Thailand, the Singapore International School of Bangkok (SISB; Chinese: 泰国新加坡国际学校; pinyin: Tàiguó Xīnjiāpō Guójì Xuéxiào) launched SISB Ekkamai as its first campus and opened the Pracha Uthit campus in 2012, followed by the Suvarnabhumi campus in 2013 at Bangplee, Samutprakarn, Chiangmai and Thonburi campus in 2017. SISB has five campuses in Thailand, which adopt the Singapore and UK curricula as the foundation for teaching and learning. Currently, SISB is the only International School with 5 Campuses.

reference

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Singapore International School of Bangkok	International