Berlin Brandenburg International School (BBIS) is an IB World School. The school was established 1990 in Potsdam, Germany, but is now located in Kleinmachnow, between Berlin and Potsdam, 17 kilometres (11 mi) to Berlin and 20 kilometres (12 mi) to Potsdam. English is the language of instruction at BBIS, meaning that all subjects, including maths, drama, humanities, technology, music, etc. are taught in English. The school is divided into elementary, middle and upper schools.