The ISK was established in 1993 in the heart of Kraków. The school was founded as the American International School of Kraków (AISK) then later changed its name to the International School of Kraków (ISK). In 2006, the school moved to a new campus in Lusina with funding assistance from the United StatesEmbassy in Poland. The school belongs to the Central and Eastern European Schools Association and competes with schools throughout Central and Eastern Europe. It is accredited by the Council of International Schools and the New England Association of Schools and Colleges. Since 2012, ISK provides the IB Diploma Programme for high school students, and is one of four schools in Kraków to do so.
ISK is housed on an enclosed 1.25 hectare campus in the suburb of Lusina, approximately 20 minutes from the city center. There are landscaped areas with park benches, basketball courts and a soccer field. ISK features a library, multi-purpose hall, sports facility, and computer lab; wireless Internet access is available throughout the campus.