The Olive Tree School
4.311 reviews Modistas, 8 (esquina Rambla del Garraf), Barcelona, Barcelona
70% international200 studentsAges 3–16
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
4.311 reviews Modistas, 8 (esquina Rambla del Garraf), Barcelona, Barcelona
70% international200 studentsAges 3–16
5.03 reviews 27 Punggol Field Walk, 828649, Singapore, Singapore
Ages 3–18
4.98 reviews Paseo de la Reina Elisenda de Montcada 18, 08034, Barcelona, Barcelona
72% international670 students4.5+ rating
3.06 reviews 178-180, Ronda 8 de Marc, 08390, Barcelona, Barcelona
1,400 studentsAges 1–18
5.05 reviews Jan Luijkenstraat 29, 1071 CK Amsterdam, 1071 CK, Amsterdam, North Holland
60% international55 students4.5+ rating
3.510 reviews Carrer Ginesta, 26, Castelldefels, 08860, Barcelona, Barcelona
1,658 studentsAges 3–18
3.84 reviews Av. Del Tremolencs, 24., La Garriga, 08530, Barcelona, Barcelona
1,047 studentsAges 2–18
5.07 reviews Hennur Bagalur Road, 562149, Hennur, Karnataka
30% international280 students4.5+ rating
ISA Rankings