GCS Senior School (Grades 9–12) provides a rigorous and inspiring academic environment where students refine their talents, pursue specialized interests, and prepare for success at top universities worldwide.
The Senior School delivers a comprehensive university preparatory curriculum that combines recognized credentials with exceptional opportunities for academic growth:
Ontario Secondary School Diploma (OSSD) – A provincially recognized diploma respected by Canadian and international universities.
Advanced Placement (AP) Programme – College Board-Certified university-level courses that allow students to demonstrate advanced achievement and earn potential post-secondary credits.
ESL Support – Specialized academic English instruction that ensures multilingual learners have the tools to excel in both coursework and university applications.
Together, these pathways empower students to achieve academic distinction, gain confidence in their abilities, and enter post-secondary education with the skills, knowledge, and character needed to thrive.
