A school that follows an international curriculum, often using a language other than Japanese as the medium of instruction. Compare with インターナショナルスクール, which is more common in everyday speech.
See also: インターナショナルスクール
She learned English at an international school.
More common and casual term for 'international school'; 国際学校 is a more formal or written variant.
Compound of 国際 (international) and 学校 (school).