St. John's International School, located in Waterloo, Belgium, offers a comprehensive International Baccalaureate (IB) curriculum, including the Primary Years Programme (PYP), Middle Years Programme (MYP), and Diploma Programme (DP). As an early adopter of the IB, the school has over 40 years of experience and achieved an average IBDP score of 36 in 2025, the highest in Belgium. The school is part of the Inspired Education Group, providing students access to a global network of over 121 schools. St. John's is known for its strong arts programme and partnerships with local sports clubs, enhancing its diverse extracurricular offerings.