In 1996, the school was accepted as an International Baccalaureate World School and began offering the IB Diploma to students in Grades 11 and 12. This was followed by authorization to offer the IB Middle Years Programme in 2004 and the IB Primary Years Programme in 2007, making GNS one of a few schools in Canada to offer the full IB continuum. As one of only 5% of IB schools in Canada authorized to offer the full continuum of IB programmes, GNS is proud of its unique 'IB Advantage': a 21st-Century approach which educates the whole child and creates global thinkers.