- Honored by the University of Cambridge as "One of the top hundred schools in the world".
- "IGSC is a Harvard to the heats, a Yale to young minds and an Aya Sophiya to the soul of all those students that come to IGSC seeking to evolve into strong responsible individuals", Cambridge Guide to Excellence.
- Winners of the United World Scholarships to the U.K. and the U.S. since 1985.
- Winners of the children's Summit 1998, when IGSC students became Pakistan's youngest Ambassadors to Paris, France.
- Winners of gold medals and high distinctions in the International assessment Tests of Australian Universities.
- The only school to be honoured by a privileged invitation from the President of the United States of America to participate in the Global Young Leaders Conference 2001 hosted by the United Nations.
- The only Pakistani school invited by the Governments of Turkey and Morocco to participate in the prestigious International Children Festivals held in Antalya, Izmir, Istanbul, Rabat and Casablanca.