Istanbul International Community School (also known as IICS) is one of the oldest international schools in the world and the first established in Istanbul. It was one of the first schools in the world authorized to offer all three International Baccalaureate programs. Founded in 1911, the independent, non-profit, non-sectarian school offers co-ed K–12 education. As of August 2018, the school's total enrollment was 525, with more than 60 nationalities represented. Due to legal requirements, only holders of non-Turkish passports are eligible to apply to the school.