🧭 Introduction
Colombo is the main hub for international education in Sri Lanka, offering globally recognized curricula such as Cambridge, Edexcel, and IB.
These schools are popular among:
Expat families
Business professionals
Local high-income families
Diplomatic communities
In 2026, Colombo has become a regional education center with strong academic standards and university pathways to the UK, USA, Australia, and Singapore.
🎓 Top 10 International Schools in Colombo
1️⃣ Overseas School of Colombo (OSC)
📍 Address: P.O. Box 9, Pelawatte, Battaramulla
📞 Phone: +94 11 278 4920
🌐 Website: www.osc.lk
Curriculum: International Baccalaureate (IB)
⭐ Why it stands out:
Only full IB school in Sri Lanka
Over 40 nationalities
Strong university placements globally
2️⃣ Colombo International School (CIS)
📍 Address: 28 Gregory’s Road, Colombo 07
📞 Phone: +94 11 269 7587
🌐 Website: www.cis.lk
Curriculum: British (Edexcel IGCSE & A Levels)
⭐ Highlights:
One of the oldest international schools (1982)
Strong academic reputation
Excellent facilities in Colombo 7
3️⃣ The British School in Colombo
📍 Address: 63 Elvitigala Mawatha, Colombo 08
📞 Phone: +94 11 269 4229
🌐 Website: www.britishschool
Curriculum: British
⭐ Highlights:
Strong academics + sports balance
One of the most prestigious schools
Popular among expat families
4️⃣ Elizabeth Moir School
📍 Address: 4/20 Thalakotuwa Gardens, Colombo 05
📞 Phone: +94 11 250 7750
🌐 Website: elizabethmoirschool.com
Curriculum: British
⭐ Highlights:
Small class sizes
Very high academic results
Strong university placements
5️⃣ Wycherley International School
📍 Address: Bauddhaloka Mawatha, Colombo
📞 Phone: +94 11 258 2285
🌐 Website: wycherley.lk
Curriculum: Cambridge
⭐ Highlights:
Long-established school
Strong Cambridge IGCSE program
Affordable compared to elite schools
6️⃣ Asian International School
📍 Address: 23/1 Thalakotuwa Gardens, Colombo 05
📞 Phone: +94 11 250 5599
🌐 Website: ais.lk
Curriculum: Cambridge
⭐ Highlights:
Balanced academics and extracurriculars
Good reputation for discipline
Strong student support system
7️⃣ Lyceum International School
📍 Address: Raymond Road, Nugegoda
📞 Phone: +94 11 282 3868
🌐 Website: lyceum.lk
Curriculum: Cambridge / Edexcel
⭐ Highlights:
Large school network in Sri Lanka
Strong sports and extracurricular programs
Multiple branches islandwide
8️⃣ Stafford International School
📍 Address: 40, Galle Road, Colombo 03
📞 Phone: +94 11 250 6565
🌐 Website: stafford.edu.lk
Curriculum: British
⭐ Highlights:
Strong academic tradition
Balanced discipline and academics
Good university placements
9️⃣ Gateway College Colombo
📍 Address: 72 Rajagiriya Road, Colombo
📞 Phone: +94 11 280 5200
🌐 Website: gatewaycollege.lk
Curriculum: Cambridge
⭐ Highlights:
Strong academic structure
Large student base
Good university progression rates
🔟 Alethea International School
📍 Address: 3/1 Sri Mahabodhi Road, Dehiwala
📞 Phone: +94 11 273 1711
🌐 Website: aletheaint.edu.lk
Curriculum: Cambridge
⭐ Highlights:
Affordable international education option
Good academic performance
Popular among suburban families
📊 Comparison Overview
🏆 Best academic reputation: OSC, CIS, Elizabeth Moir
💰 Most affordable: Alethea, Wycherley
🌍 Most international: OSC
🎓 Best for Cambridge A Levels: CIS, Gateway, British School
🧭 Final Thoughts
Colombo offers some of the best international education options in South Asia, with strong global recognition and university pathways.
👉 If you want elite education: OSC or British School
👉 If you want balanced academics: CIS or Gateway
👉 If you want affordability: Wycherley or Alethea