Complex sentence: Baku International School (BIS) is a school located in Baku, Azerbaijan, which was established by the Quality Schools International (QSI) organization in 1994.
Split into simpler sentences: Baku International School (BIS) is located in Baku, Azerbaijan. Azerbai Baku International School, a private non-profit institution that opened in September 1994 It was established by Quality Schools International (QSI) in 1994.