Halcyon London International School
5.06 reviews 33 Seymour Place, W1H 5AU, London, London
4.5+ ratingAges 11–16
ISA Ranking 2026
Discover the Best 125 International private Schools in the World for 2026. Compare curricula, fees and parent reviews to shortlist schools for your family.
How is the ranking calculated?125 schools in the ranking
5.06 reviews 33 Seymour Place, W1H 5AU, London, London
4.5+ ratingAges 11–16
4.56 reviews Frydlantska 1350/1, Prague 8 - Kobylisy, 182 00, Prague, Prague
60% international476 students4.5+ rating
4.25 reviews Las Filipinas, 15., Urb. Blue Lagoon, 03193, Alicante, Alicante
70% international650 studentsAges 2–18
4.65 reviews Travesía Buenavista 1, 30120, Murcia, Murcia
10% international880 students4.5+ rating
4.5154 reviews G19, Ciputra, Phú Th??ng, Tây H?, 124000, Hanoi, Ha Tay
4.5+ ratingAges 3–18
4.17 reviews Husaren Str. 20, 50935, Cologne, North Rhine Westphalia
Ages 2–18
4.25 reviews 46 Avenue Egle, 78600 Maisons-Laffitte, 78600, Paris, Ile-de-France
1,500 studentsAges 11–18
4.04 reviews South County Business Park, Leopardstown, D18 T672, Dublin, Dublin
80% international580 studentsAges 3–18
5.05 reviews Carrer d'Enric Granados, 7, 08007, Barcelona, Barcelona
70% international280 students4.5+ rating
4.07 reviews R. Visc. de Caravelas, 48 - Botafogo, 22271-022, Rio de Janeiro, Rio de Janeiro
10% international620 studentsAges 2–18
Camino del Molino, 28816, Camarma de Esteruelas, Madrid
560 students
Rue de la Sabotte 9, 78160, Marly-le-Roi, Ile-de-France
89% international50 students
Avenida Juan Carlos I 12, 28905, Getafe, Madrid
Ages 1–18
4.25 reviews 95 Portsdown Road , 139299, Singapore, Singapore
2,850 studentsAges 3–18
No.23, Huanxin North Road, Huangpu District, Guangzhou
99.99% international
Rua Luís Caldas, 2500, Caldas da Rainha, Leiria
25% international700 students
5.07 reviews Hennur Bagalur Road, 562149, Hennur, Karnataka
30% international280 students4.5+ rating
5.04 reviews 36 Portland Pl, W1B 1LS, London, London
70% international110 studentsAges 2–18
5.04 reviews Street 1 44-46, 700000, Ho Chi Minh City, Ho Chi Minh
Ages 0–18
5.05 reviews Calle Barbero de Sevilla, 16, 28222, Madrid, Madrid
40% international350 students4.5+ rating
ISA Rankings