The International School of Mauritius (ISM) is one of only two International Baccalauréat (IB) World Schools in Mauritius, offering the full IB continuum from the Primary Years Programme (PYP, ages 3–12) through the Middle Years Programme (MYP, ages 11–16) to the IB Diploma Programme (ages 16–18).

The IB is increasingly the preferred qualification for families who move frequently or who want maximum flexibility for university applications worldwide. The IB Diploma is accepted by universities in over 100 countries, and the programme's emphasis on independent thinking, research skills, and international mindedness tends to produce well-rounded graduates with strong university application profiles.

ISM is located on the central plateau, accessible from Port Louis and most residential areas. The school has a diverse international student body and the community reflects the broad internationalism of the IB philosophy. The PYP and MYP sections are inquiry-based, which can be different from the more structured approaches of Cambridge or French curriculum schools — some children thrive in this environment; others find the additional structure of the Cambridge curriculum more supportive.

The school has been investing in facilities and has a modern campus with good science and technology provision. The IB Diploma results are consistently above the world average, and graduates regularly go on to universities in the UK, USA, Canada, France, and Australia.

Families considering IB over Cambridge or French Bac should talk to the school about the differences; ISM is happy to discuss the curriculum in detail at open days.