Tehran International School

Tehran International & Adaptive School (TIS) is an international school located in North Tehran, Iran. It consists of three campuses: girls, boys elementary and boys grade 7–12. The school offers the International Baccalaureate's IB Diploma Programme. Boys attend school in Saadat Abad, while girls attend school in Shahrak-e Gharb. There are two divisions per school: an international school for non-Iranians, which consists of mainly an ex-patriate student body (it enrols very few Iranian nationals); and an adaptive school for Iranians returning from abroad who need to re-adjust to the Iranian educational system.

It was established in 1985 under the Education Ministry of Iran.