Turku International School offers basic education in English for grades 1–9, following the Finnish National Core Curriculum. Teaching emphasizes inquiry-based learning, collaboration, and the development of critical thinking skills. Students study a broad range of subjects, including languages, mathematics, sciences, handicrafts, arts, home-economics, and physical education, while also learning about Finnish culture and society.
Assessment is continuous and supports individual growth, with a focus on both academic achievement and well-being. The school fosters an international mindset, encouraging respect for diversity and global citizenship.