BISC meaning in Regional ?

British International School of Chicago, Lincoln Park (BISC Lincoln Park) is a private international school for Pre Nursery to Year 6 students (ages 15+ months to 11) located in the Clybourn Corridor of Cook County, Illinois. In September 2001, BISC Lincoln Park was the fourth school to open in the United States by the British Schools of America and first campus to open in the Midwest. BISC Lincoln Park is now operated by Nord Anglia Education and is part of a network of 66 schools located in 29 countries around the world, with more than 64,000 students. Nord Anglia has more than 13,000 teachers and support staff globally and have a total capacity of more than 93,400 school places. The private elementary school is divided into three learning stages: Early Years Foundation Stage (pre nursery, nursery school and Pre-K, ages 15+ months to 5), Key Stage 1 (primary school, ages 5 to 7), and Key Stage 2 (primary school, ages 7 to 11).