Company lists · Data refreshed September 2026

Top 14 International schools based in Sri Lanka

RevenueBase identified 84 international schools headquartered in Sri Lanka as of September 2026 and tracks 2,562 professional contacts across them, including 579 with verified work emails. Colombo is the largest hub.

This list covers international schools headquartered in Sri Lanka, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review
84Companies
2,562Contacts tracked
579Verified emails
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The 14 largest international schools based in Sri Lanka

Ranked by team size
Top 14 of 84 international schools based in Sri Lanka, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to international schools: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceColombo, Sri LankaHQ checked Sep 20, 202651-200221 contacts →

Strong evidence

“Royal Institute International School, with its 50 years of experience in the field of international education, enables students to becomes the best versions of themselves.”

Source: RevenueBase Database · checked Sep 20, 2026
2Strong evidenceColombo, Sri LankaHQ checked Sep 20, 2026201-500214 contacts →

Strong evidence

“BSC is one of the leading international schools in the sub-continent, with an excellent reputation for providing an outstanding and thriving all-round education based on the…”

Source: RevenueBase Database · checked Sep 20, 2026
3Indirect evidenceColombo 3, Sri LankaHQ checked Sep 20, 202651-200178 contacts →

Indirect evidence

“American Education Center, operating for 22 years is Sri Lanka’s largest education conglomerate currently in operation.”

Source: RevenueBase Database · checked Sep 20, 2026
4Partial evidenceRajagiriya, Sri LankaHQ checked Sep 20, 20261,001-5,000173 contacts →

Partial evidence

“State of the art Campuses, high quality personalized teaching, a programme of learning benchmarked against a range of world class internationally recognized qualifications from UK…”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceKandy, Sri LankaHQ checked Sep 20, 2026201-500109 contacts →

Indirect evidence

“Trinity College aims to produce the next generation of leaders in Sri Lanka.”

Source: RevenueBase Database · checked Sep 20, 2026
6Strong evidenceBattaramulla, Sri LankaHQ checked Sep 20, 202651-20085 contacts →

Strong evidence

“Founded in 1957, The Overseas School of Colombo is the oldest and most respected international school in Sri Lanka, and the only one to offer the International Baccalaureate (IB)…”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceNugegoda, Sri LankaHQ checked Sep 20, 202611-5068 contacts →

Indirect evidence

“The Lyceum Campus, Sri Lanka, is a private higher education institution fully owned by the Lyceum Education Group in Sri Lanka.”

Source: RevenueBase Database · checked Sep 20, 2026
8Strong evidenceColombo, Sri LankaHQ checked Sep 20, 2026201-50052 contacts →

Strong evidence

“Since 1986 Strive Towards the Light A very warm welcome to Stafford International School where students are placed firmly at the centre.”

Source: RevenueBase Database · checked Sep 20, 2026
9Partial evidenceMount Lavinia, Sri LankaHQ checked Sep 20, 202611-5042 contacts →

Partial evidence

“Established in 2008, Iman Academy is a full-time private school for children from preschool to advanced level serving families in Colombo and suburbs.”

Source: RevenueBase Database · checked Sep 20, 2026
10Partial evidenceColombo, Sri LankaHQ checked Sep 20, 2026501-1,00026 contacts →

Partial evidence

“The pioneer in the English-medium private school in National Curriculum in Sri Lanka, which is run by a dedicated principal and management staff.”

Source: RevenueBase Database · checked Sep 20, 2026
11Partial evidenceDehiwela, Sri LankaHQ checked Sep 20, 202651-20012 contacts →

Partial evidence

“Alethea was established in 1927 and, in 1954, was registered with the Department of Examinations of Sri Lanka as a Secondary School.”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceColombo, Sri LankaHQ checked Sep 20, 202651-20010 contacts →

Indirect evidence

“Sri Lanka's premier private English institute dedicated to providing high-quality English education to students from Grade 1 to Grade 11 since 1976.”

Source: RevenueBase Database · checked Sep 20, 2026
13Strong evidenceNegombo, Sri LankaHQ checked Sep 20, 202651-2004 contacts →

Strong evidence

“Negombo Wisdom College is one of the best English medium International School in Negombo with more than 600 students and 55 staff members.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidenceRajagiriya., Sri LankaHQ checked Sep 20, 202611-502 contacts →

Indirect evidence

“Universal College Sri Lanka (UCL) is the brain child of Eduko Lanka Principals; Universal College Lanka (UCL) is fully owned by Eduko Lanka, a private education services company…”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 14 of 84 international schools based in Sri Lanka

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International schools based in Sri Lanka at a glance

As of Sep 20, 2026
22.6%Verified-email coverage
30.5Average contacts per company
51-200Median size (employees)
17.9%Largest-city concentration · Colombo
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
8
11-50
19
51-200
34
201-500
8
501-1,000
4
1,001-5,000
7
5,001-10,000
2
10001+
1

Email recency for this list is measured worldwide rather than for Sri Lanka, so it is reported there. Company counts and contact totals on this page are exact for Sri Lanka, over 84 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among international schools, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Sri Lanka whose own description of what they do matches “international schools”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names international schools), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among international schools, and records with no verified work email. Companies headquartered outside Sri Lanka are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 579 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names international schools, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many international schools are there based in Sri Lanka?

RevenueBase identified 84 international schools headquartered in Sri Lanka as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Royal Institute International School, headquartered in Colombo, tops this list with the largest team on record.

Which city has the most international schools?

Colombo leads with 15 headquartered companies, followed by Gampaha (4) and Nugegoda (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 579 verified decision-maker contacts tracked across these 84 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.