Company lists · Data refreshed September 2026

Top 25 International schools based in Romania

Name: International schools based in Romania
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 98 companies tracked

RevenueBase identified 98 international schools headquartered in Romania as of September 2026 and tracks 2,123 professional contacts across them, including 686 with verified work emails. Bucharest is the largest hub.

This list covers international schools headquartered in Romania, 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

98Companies

2,123Contacts tracked

686Verified emails

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The 25 largest international schools based in Romania

Ranked by team size

Top 25 of 98 international schools based in Romania, 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Transylvania College The Cambridge International School In Cluj	Partial evidence	Cluj-napoca, RomaniaHQ checked Sep 20, 2026	51-200	159 contacts →
	Partial evidence “Transylvania College is a student-centred school, offering a complete educational path, from nursery to high school.” Source: RevenueBase Database · checked Sep 20, 2026
2	American International School Of Bucharest	Strong evidence	Voluntari, RomaniaHQ checked Sep 20, 2026	201-500	144 contacts →
	Strong evidence “AISB was founded in 1962 and is currently Bucharest's largest international school.” Source: RevenueBase Database · checked Sep 20, 2026
3	British School Of Bucharest	Strong evidence	Voluntari, RomaniaHQ checked Sep 20, 2026	51-200	115 contacts →
	Strong evidence “The British School of Bucharest (BSB) is a leading international school, providing a comprehensive international education based on the National Curriculum for England and offers…” Source: RevenueBase Database · checked Sep 20, 2026
4	Avenor College	Strong evidence	Bucharest, RomaniaHQ checked Sep 20, 2026	51-200	111 contacts →
	Strong evidence “Avenor College is a non-profit, bilingual international school rooted in Romanian culture.” Source: RevenueBase Database · checked Sep 20, 2026
5	Cambridge School Of Bucharest	Strong evidence	Voluntari, RomaniaHQ checked Sep 20, 2026	51-200	107 contacts →
	Strong evidence “We have been a prominent international school in Bucharest for over 30 years, delivering a high-quality and innovative education to a growing global family.” Source: RevenueBase Database · checked Sep 20, 2026
6	International School Of Bucharest	Strong evidence	Bucharest, RomaniaHQ checked Sep 20, 2026	51-200	105 contacts →
	Strong evidence “International School of Bucharest is a non-profit day school providing a British style of education for children aged two and a half years to 19 years.” Source: RevenueBase Database · checked Sep 20, 2026
7	Ioanid School	Indirect evidence	Bucuresti, RomaniaHQ checked Sep 20, 2026	51-200	102 contacts →
	Indirect evidence “IOANID propune redescoperirea valorilor incontestabile ale sistemului de învățământ privat din perioada interbelica și așezarea lor într-un context modern, de influență…” Source: RevenueBase Database · checked Sep 20, 2026
8	Liceul Teoretic International DE Informatica Bucuresti	Strong evidence	Sector 3, RomaniaHQ checked Sep 20, 2026	201-500	81 contacts →
	Strong evidence “The International Computer High School of Bucharest was founded in 1995 by Lumina Educational Institutions.” Source: RevenueBase Database · checked Sep 20, 2026
9	International House Bucharest	Strong evidence	Bucharest, RomaniaHQ checked Sep 20, 2026	51-200	74 contacts →
	Strong evidence “International House is one of the largest and oldest groups of language schools in the world.” Source: RevenueBase Database · checked Sep 20, 2026
10	International British School Of Bucharest	Partial evidence	Bucharest, RomaniaHQ checked Sep 20, 2026	51-200	59 contacts →
	Partial evidence “We are a small, friendly and happy school with a strong sense of community.” Source: RevenueBase Database · checked Sep 20, 2026
11	Olga Gudynn International School	Strong evidence	Voluntari, RomaniaHQ checked Sep 20, 2026	51-200	57 contacts →
	Strong evidence “Olga Gudynn International School (OGIS) is a happy and successful bilingual pre-school, primary, secondary and high school in Bucharest.” Source: RevenueBase Database · checked Sep 20, 2026
12	Questfield International College	Strong evidence	Bucharest, RomaniaHQ checked Sep 20, 2026	51-200	56 contacts →
	Strong evidence “One of the most appreciated private schools in the North area of Bucharest that offers an option between two lines of study (Romanian and International), involved in curriculum…” Source: RevenueBase Database · checked Sep 20, 2026
13	Lumina Schools	Indirect evidence	Bucuresti, RomaniaHQ checked Sep 20, 2026	201-500	51 contacts →
	Indirect evidence “Lumina instituții de Învățământ este un complex educațional format din: trei licee (Liceele Teoretice Internaționale de Informatica București, Colentina și Constanta – cu…” Source: RevenueBase Database · checked Sep 20, 2026
14	Genesis College	Indirect evidence	Bucharest, RomaniaHQ checked Sep 20, 2026	51-200	50 contacts →
	Indirect evidence “For over 26 years, we have been offering our students the best education and conditions to reach their potential.” Source: RevenueBase Database · checked Sep 20, 2026
15	Mark Twain International School	Strong evidence	Voluntari, RomaniaHQ checked Sep 20, 2026	51-200	48 contacts →
	Strong evidence “Mark Twain International School is proud to be one of the oldest private schools in Romania serving over 600 students from preschool through grade 12.” Source: RevenueBase Database · checked Sep 20, 2026
16	Royal School In Transylvania	Strong evidence	Cluj-napoca, RomaniaHQ checked Sep 20, 2026	51-200	47 contacts →
	Strong evidence “Royal School in Transylvania is the newest International School in Cluj Napoca, with exclusive English teaching after the national curriculum of England, member of COBIS (Council…” Source: RevenueBase Database · checked Sep 20, 2026
17	Liceul Internaţional King George	Indirect evidence	Bucuresti, RomaniaHQ checked Sep 20, 2026	51-200	42 contacts →
	Indirect evidence “Ne dorim modelarea de caractere, unde accentul se pune pe valori care să fie respectate nu prin constrângere, ci prin responsabilizare, prin determinarea comportamentului pozitiv.” Source: RevenueBase Database · checked Sep 20, 2026
18	Lycée Français Anna DE Noailles - Bucarest	Indirect evidence	Bucuresti, RomaniaHQ checked Sep 20, 2026	51-200	35 contacts →
	Indirect evidence “Le lycée Anna de Noailles est conventionné avec l' AEFE : L’enseignement qui y est dispensé est conforme aux programmes du ministère français de l’Éducation nationale.” Source: RevenueBase Database · checked Sep 20, 2026
19	Liceul Teoretic Scoala MEA	Indirect evidence	Sectorul 1, RomaniaHQ checked Sep 20, 2026	51-200	32 contacts →
	Indirect evidence “Școala Mea oferă părinților o soluție extinsă învățământului public românesc, cu accent pe dezvoltarea holistică a copiilor, în așa fel încât performanța școlară să fie îmbinată…” Source: RevenueBase Database · checked Sep 20, 2026
20	Aletheea	Partial evidence	Bucharest, RomaniaHQ checked Sep 20, 2026	11-50	27 contacts →
	Partial evidence “The school’s name has the origin in Greek (aletheia) and has the meaning of Truth, Wisdom and Freedom.” Source: RevenueBase Database · checked Sep 20, 2026
21	King's OAK British International School	Strong evidence	Bucharest, RomaniaHQ checked Sep 20, 2026	11-50	27 contacts →
	Strong evidence “We are a family, focussed International School whose results are outstanding.” Source: RevenueBase Database · checked Sep 20, 2026
22	National College Andrei Saguna	Partial evidence	Brașov, RomaniaHQ checked Sep 20, 2026	11-50	25 contacts →
	Partial evidence “Colegiul Național “Andrei Șaguna” is a state secondary school with a long trandition of excellence.” Source: RevenueBase Database · checked Sep 20, 2026
23	International School Of Oradea	Partial evidence	Oradea, RomaniaHQ checked Sep 20, 2026	51-200	23 contacts →
	Partial evidence “The only BSO accredited school in Oradea that offers education for 1.5 - 12 years old.” Source: RevenueBase Database · checked Sep 20, 2026
24	Maarif International School Of Bucharest	Strong evidence	Voluntari, RomaniaHQ checked Sep 20, 2026	51-200	21 contacts →
	Strong evidence “MISB is an international school with English as the language of instruction.” Source: RevenueBase Database · checked Sep 20, 2026
25	Liceul Internațional DE Informatică Spectrum Cluj	Indirect evidence	Cluj-napoca, RomaniaHQ checked Sep 20, 2026	51-200	20 contacts →
	Indirect evidence “Grădiniță - Primar - Gimnaziu - Liceu O şcoală ca o floare!” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: international schools. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names international schools.
Partial evidence: Its own public description names part of international schools, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international schools. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 98 international schools based in Romania

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International schools based in Romania at a glance

As of Sep 20, 2026

32.3%Verified-email coverage

21.7Average contacts per company

11-50Median size (employees)

23.5%Largest-city concentration · Bucharest

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Romania, so it is reported there. Company counts and contact totals on this page are exact for Romania, over 98 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 Romania 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 Romania 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, 686 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 Romania?

RevenueBase identified 98 international schools headquartered in Romania 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?

Transylvania College The Cambridge International School In Cluj, headquartered in Cluj-Napoca, tops this list with the largest team on record.

Which city has the most international schools?

Bucharest leads with 23 headquartered companies, followed by Bucuresti (14) and Voluntari (8).

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 686 verified decision-maker contacts tracked across these 98 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.