Halcyon London International School

Halcyon London International School is a progressive, student-centred IB secondary school in the heart of Marylebone. Offering the IB Middle Years Programme for ages 11-16 and the IB Diploma Programme for ages 16-18, Halcyon has built a strong reputation among London's international community for its innovative, project-based approach to learning that goes well beyond conventional academic instruction.

The school is deliberately small — capped at around 200 students — which allows for deeply personalised learning, strong teacher-student relationships, and a genuine community feel that is difficult to find in larger London schools. Students are encouraged to pursue interdisciplinary projects, entrepreneurial thinking, and real-world problem solving alongside the rigorous IB curriculum.

Located in an elegant Marylebone townhouse setting, Halcyon attracts globally minded families from the arts, media, technology, and international business sectors who value creativity and independent thinking as much as academic achievement. Its location near Regent's Park and Oxford Street makes it highly accessible for families across central and north London.