Company lists · Data refreshed September 2026
Top 25 Esl schools worldwide
RevenueBase identified 15,536 esl schools worldwide as of September 2026 and tracks 196,856 professional contacts across them, including 12,875 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.
This list covers esl schools worldwide, 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. Country and city lists for esl schools follow the table.
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.
The 25 largest esl schools worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 5,268 contacts → | ||||
Partial evidence “In 1987, the largest language school franchise in the world was born in Campinas (SP).From a single school, began the construction of a great system that has already crossed the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 4,171 contacts → | ||||
Indirect evidence “We are Wall Street English, the premier provider of English language instruction for individuals and corporate clients around the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,273 contacts → | ||||
Indirect evidence “Berlitz Corporation is a world-leading language and cultural training provider with over 140 years of experience.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,567 contacts → | ||||
Indirect evidence “A Cultura Inglesa é uma empresa inovadora e que sonha em projetar o Brasil no cenário global através da educação, formando cada vez mais cidadãos confiantes e fluentes no inglês.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,180 contacts → | ||||
Partial evidence “Academic Society Online, or Acadsoc, is an international one-stop shop for ESL learning and education consultancy online.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,751 contacts → | ||||
Indirect evidence “ILA Vietnam is one most well established and one of the leading providers of 21st century English Language programs in Vietnam.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,637 contacts → | ||||
Indirect evidence “With engaging 1-on-1 language lessons and materials based on our students' needs and interests, Engoo brings people together and helps them understand one another through the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,378 contacts → | ||||
Indirect evidence “We are the only ally in Latin America of Cambridge University Press and we comply with the highest quality standards such as quality standards: ISSO 9001 - NTC - 5580 to provide…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,106 contacts → | ||||
Partial evidence “A inFlux English School é uma rede de escolas de idiomas que trabalha desde 2004 unindo inovação e compromisso com o aprendizado.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 889 contacts → | ||||
Indirect evidence “Tutlo to najszybciej rozwijająca się platforma do nauki języka angielskiego w Polsce.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 736 contacts → | ||||
Indirect evidence “ILSC Education Group offers life-changing educational experiences in Canada, Australia, and India, some of the world’s most attractive and popular English-speaking work and study…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 707 contacts → | ||||
Indirect evidence “Kaplan International Languages is a leading provider of international education.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 701 contacts → | ||||
Partial evidence “Adult Education-ESL, CBET (Part-time, evenings)” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 614 contacts → | ||||
Partial evidence “CHUNGDAHM Learning is a market leader in the Korean ESL industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 609 contacts → | ||||
Indirect evidence “goFLUENT acquired the assets of Learnship Networks GmbH on December 1st, 2025.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 590 contacts → | ||||
Partial evidence “The International Language Academy of Canada (ILAC) is one of the best-known English language schools in the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 587 contacts → | ||||
Indirect evidence “Somos un centro de idiomas que se caracteriza por contar con el mejor curso de inglés en México.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 570 contacts → | ||||
Indirect evidence “35 colegios de Fomento en 11 CCAA (la mayoría concertados), alumnos, familias, 2.600 profesionales y más de alumni.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 555 contacts → | ||||
Indirect evidence “A TIMES IDIOMAS desenvolveu um sistema de franchising estruturada por uma rede de escolas de ensino do idioma inglês para adultos, com unidades nos estados de São Paulo, Goiás e…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 537 contacts → | ||||
Indirect evidence “Effective, practical and always with maximum flexibility: Berlitz is your partner for foreign languages, intercultural know-how, and business skills.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 528 contacts → | ||||
Indirect evidence “For more than 60 years, students have chosen ELS to achieve their English language goals.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 526 contacts → | ||||
Indirect evidence “A Fluency Academy nasceu com a missão de tornar o Brasil e o mundo lugares melhores, transformando a barreira da comunicação em uma ponte para novas experiências!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 525 contacts → | ||||
Indirect evidence “BRASAS English Course | Ensino de inglês com método exclusivo e resultados comprovados Desde 1966, o BRASAS oferece um método único de ensino de inglês focado em quem tem o…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 520 contacts → | ||||
Indirect evidence “Queremos contarte quiénes somos y cómo comenzó todo.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 518 contacts → | ||||
Indirect evidence “The English Language Center has been dedicated to providing English programs of the highest quality to international students since 1978.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: esl 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 esl schools.
- Partial evidence
- Its own public description names part of esl schools, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name esl 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 15,536 esl schools worldwide
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Esl schools worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 esl 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.
- Coverage
- Every country. Country and city lists for esl schools are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “esl 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 esl 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 esl schools, and records with no verified work email.
- 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, 12,875 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.
Esl schools by location
44 lists · largest firstEvery Esl schools list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Esl schools based in Brazil1,972
- Esl schools based in Spain1,472
- Esl schools based in the United States775
- Esl schools based in the United Kingdom687
- Esl schools based in Italy599
- Esl schools based in France546
- Esl schools based in Poland514
- Esl schools based in India484
- Esl schools based in Mexico388
- Esl schools based in Argentina382
- Esl schools based in Germany377
- Esl schools based in Canada342
- Esl schools based in Türkiye295
- Esl schools based in Indonesia224
- Esl schools based in Colombia180
- Esl schools based in Vietnam161
- Esl schools based in Switzerland143
- Esl schools based in Chile141
- Esl schools based in Japan131
- Esl schools based in Ukraine125
- Esl schools based in Australia108
- Esl schools based in the Netherlands102
- Esl schools based in Egypt98
- Esl schools based in Portugal97
- Esl schools based in the United Arab Emirates83
- Esl schools based in Ireland81
- Esl schools based in the Philippines79
- Esl schools based in South Africa71
- Esl schools based in Romania66
- Esl schools based in Slovakia62
- Esl schools based in Taiwan46
- Esl schools based in Belgium44
- Esl schools based in Singapore44
- Esl schools based in Costa Rica33
- Esl schools based in Austria30
Cities
- Esl schools based in Sao Paulo, Brazil405
- Esl schools based in Madrid, Spain231
- Esl schools based in Barcelona, Spain130
- Esl schools based in Rio De Janeiro, Brazil120
- Esl schools based in Belo Horizonte, Brazil79
- Esl schools based in Toronto, Canada76
- Esl schools based in Curitiba, Brazil73
- Esl schools based in Montreal, Canada54
- Esl schools based in Vancouver, Canada41
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 esl 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 esl schools are there worldwide?
RevenueBase identified 15,536 esl schools worldwide 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?
Wizard By Pearson, headquartered in Sao Paulo, tops this list with the largest team on record.
Which country has the most esl schools?
Brazil leads with 1,972 companies, followed by Spain (1,472) and the United States (775). Every esl schools list by country and city is linked on this page.
Which city has the most esl schools?
Sao Paulo leads with 406 headquartered companies, followed by London (275) and Madrid (220).
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 12,875 verified decision-maker contacts tracked across these 15,536 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.