Halcyon London International School brings a new standard of life-readying education to one of the most culturally diverse, academically rich and historically important cities in the world. Halcyon is the only not-for-profit, co-educational, exclusively International Baccalaureate (IB) school in central London.

For 11-17 year olds (Grades 6-11 / Years 7-12), expanding to include Grade 12 / Year 13 from September 2016.

Halcyon Vision

Education: from educe meaning "to draw out". Halcyon London International School is guided by a belief that an exceptional education will draw out, nourish and awaken the unique potential of each student. Discover our full Vision, Mission & Core Aims


What sculpture is to a block of marble, education is to the human soul
— Joseph Addison (1672-1719), Essayist and poet