The school was established on 14th October 1963. It was conceived as a collaborative international educational project led by the renowned German-British educational reformer Kurt Hahn, with financial support from the Ford Foundation, USAID, and the then Western Regional Government of Nigeria, which donated the land for the school.
It was founded as a private co-educational school which offers an educational programme from 7th Grade through 12th Grade for students of all nationalities in line with the British curriculum.
In sustaining the vision and mission of the founding fathers, the school adapted to the 6-3-3-4 Nigerian system of education in the late 1980s. The school engages in preparing students for international examinations such as IGCSE, SAT, Cambridge A Levels and the likes.
The School is a member of the Association of International School and draws its staff and students from different nations of the world. Student enrolment figure at inception was 160 boys and girls from 14 nations, in 1983, 953 students from 31 nations were on roll while in 2008, 1250 students from 5 nations were on roll. As at 2022, 1800 students were on roll from 3 nations. As a microcosm of the international community, it fosters among its staff and students, a spirit of tolerance, cooperation and broad outlook.
I.S.I., as we are widely known, has produced distinguished and notable men and women too numerous to mention and are occupying enviable positions in their various callings, all over the world. The school continues to distinguish itself through our students’ excellent performance in local and international examinations and other major Nigerian competitions like the Cowbell National Secondary School Competition Mathematics and Science Olympiads and Olusegun Obasanjo Presidential Library National Arts Competition, among others.
In addition our students have also recorded outstanding performance in international competitions such as Mathematics Olympia, Cruxlearning Mathematics Contest Africa where one of our students emerged as African Mathematics Champion after defeating over 10,000 participants across Africa.
The school is governed by the Board of Governors under the able chairmanship of the Deputy Vice-Chancellor (Academic) of the University of Ibadan.
OUR VISION & OUR MISSION
To become the continuous winner of the overall best result award in WASSCE, NECO, IGCSE and Cambridge A-Level worldwide.
To be among the top ten secondary schools in Nigeria.