The 27 students who chose the alternative study path got their results on Sunday. All of them received offers from local or overseas universities at the weekend.
The average IBDP score at St Paul's was 40.67, compared to the world's average 29.77. Almost 80 per cent of the school's students achieved a score of 40 or above.
Esther Mak Hoi-kay, 18, was one of five students to achieve an almost perfect score of 44. She was awarded a Swire Scholarship of HK$1 million to study law at Britain's University of Oxford. Her scholarship is a result of her outstanding performance in debating, and being admitted to the prestigious university.
The IBDP, which promotes an all-rounded education rather than specialisation, requires students to pick six subjects from different disciplines, from humanities to sciences, to art.
The highest score is seven for each subject, with a possible top overall mark of 45; the extra three points come from other subjects and participation in extra-curricular activities - Creativity, Actions, Service (CAS).
"IB made us more well-rounded, because we not only have to do core subjects, but also ToK [Theory of Knowledge], CAS, and the Extended Essay," Esther said.
The English Schools Foundation said six of its students had achieved maximum scores; 850 students from the foundation's seven secondary schools took part in this year's exam.
In Hong Kong, the IBDP is offered mostly in international schools and local schools supported by the Direct Subsidy Scheme; most local students take the HKDSE exams, the results of which will be released on Monday.