Students in Grades 6 to 10 follow the IB Middle Years Programme (MYP), and students in Grades 11 and 12 follow the university preparation IB Diploma Programme enabling them to benefit from a continuum of education while providing opportunities that meet the needs of internationally mobile students. As in the Primary School, the Secondary School has an EAL and Learning Support Team, and all students are supported by two full-time counsellors, for social-emotional support, and career and university guidance.
As a fully accredited school by the Middle States Association, our OSC High School Diploma is equivalent to a US-style diploma and is accepted by universities and colleges worldwide. Our students in Grades 9 to 12 accumulate credits towards the successful completion of the OSC High School Diploma and most students complete the IB Diploma Programme as well. Our IB Diploma results have been consistently high and well above world averages.