Company lists · Data refreshed September 2026

Top 25 Language proficiency testing companies worldwide

RevenueBase identified 942 company matches for language proficiency testing companies worldwide as of September 2026 and tracks 13,733 professional contacts across them, including 1,530 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.

This list covers company matches for language proficiency testing companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026. Country and city lists for language proficiency testing companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
942Companies
13,733Contacts tracked
1,530Verified emails
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The 25 largest language proficiency testing companies worldwide

Ranked by team size
Top 25 of 942 company matches for language proficiency testing companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCambridge, United KingdomHQ recorded Sep 20, 2026501-1,0001,689 contacts →

Exact match

“At Cambridge University Press & Assessment, we help millions of people learn English and prove their skills to the world.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchGeneva, United StatesHQ recorded Sep 20, 2026501-1,0001,198 contacts →

Exact match

“goFLUENT accelerates language learning and assessment by delivering hyper-personalized solutions that blend technology, content, and human interaction available globally on any…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchMilan, ItalyHQ recorded Sep 20, 2026n/a480 contacts →

Exact match

“British Institutes, founded in 1973 and currently working with over qualified examiners, certifies language skills according to the standards of the Council of Europe (COE) which…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLas Condes, ChileHQ recorded Sep 20, 202651-200398 contacts →

Exact match

“Tronwell, con más de 35 años de trayectoria y más de estudiantes imparte cursos de inglés bajo una metodología única que permite estudiar con la mayor flexibilidad horaria.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchManaus, BrazilHQ recorded Sep 20, 20261,001-5,000345 contacts →

Exact match

“Fundado em 1975, o ASLAN tem vasta experiência no ensino do inglês e espanhol.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchPuteaux, FranceHQ recorded Sep 20, 202651-200279 contacts →

Exact match

“Wall Street English, leader de la formation à l’anglais, la mieux adaptée à leur métier et aussi la mieux adaptée à votre entreprise.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchArlington, VA, United StatesHQ recorded Sep 20, 2026201-500276 contacts →

Exact match

“Established in 1985, Diplomatic Language Services provides exceptional language training, translation, interpretation, and linguist testing to federal and state government…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchMelbourne, AustraliaHQ recorded Sep 20, 202651-200247 contacts →

Exact match

“OET is the global leader in English language testing for healthcare.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchMontreal, QC, CanadaHQ recorded Sep 20, 202651-200176 contacts →

Exact match

“ELAM is a virtual corporate language training and assessment company based in Montreal, with over 30 years serving Canadian businesses globally.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchShibuya-ku, JapanHQ recorded Sep 20, 202651-200165 contacts →

Exact match

“We are an EdTech company based in Tokyo.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchAtlanta, GA, United StatesHQ recorded Sep 20, 202651-200164 contacts →

Exact match

“ALTA is an employee-owned language services company specializing in enterprise-level translation services, language proficiency testing, and innovative language training programs.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchArlington, VA, United StatesHQ recorded Sep 20, 202651-200153 contacts →

Exact match

“For over 35 years, we’ve served clients including the U.S.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchEugene, OR, United StatesHQ recorded Sep 20, 202651-200138 contacts →

Exact match

“Avant, The Language Proficiency Company, is your one-stop provider for learning, assessment, and certification.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchKabupaten Sleman, IndonesiaHQ recorded Sep 20, 202611-50114 contacts →

Exact match

“Menyediakan kelas dan sertifikasi bahasa Inggris secara online Kelas Online - Bahasa Inggris Dasar Karyawan - Bahasa Inggris Dasar Mahasiswa - TOEFL Listening - TOEFL Reading -…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchBucharest, RomaniaHQ recorded Sep 20, 2026201-500107 contacts →

Exact match

“Eucom is the partner dedicated to companies investing in their employees’ development of language skills.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchBarcelona, SpainHQ recorded Sep 20, 202611-50101 contacts →

Exact match

“Exams Catalunya, Exams Balears and Andorra are authorised Platinum Exam Centres (ES439-ES449-AD439) dedicated to the organisation, administration and promotion of Cambridge…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchParis, FranceHQ recorded Sep 20, 202651-20093 contacts →

Exact match

“Acteur majeur et pionnier des cours particuliers de langue à distance, Lingueo s'adresse à la fois aux particuliers et aux professionnels depuis 2007.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchMadrid, SpainHQ recorded Sep 20, 202611-5092 contacts →

Exact match

“En Interlang somos expertos en la formación de idiomas para empresas.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchGenappe, BelgiumHQ recorded Sep 20, 202651-20082 contacts →

Exact match

“Language empowers businesses to compete and collaborate more effectively in international markets.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchIsraelHQ recorded Sep 20, 202651-20081 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchAnn Arbor, MI, United StatesHQ recorded Sep 20, 202611-5080 contacts →

Exact match

“Michigan Language Assessment offers a comprehensive and flexible set of the highest-quality products and services to help educational, governmental, and private-sector…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLondon, United KingdomHQ recorded Sep 20, 202611-5077 contacts →

Exact match

“EnglishScore is the global mobile English test and certificate.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchCantón Central, Costa RicaHQ recorded Sep 20, 202651-20076 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchElkins Park, PA, United StatesHQ recorded Sep 20, 202611-5075 contacts →

Exact match

“CETRA Language Solutions offers translation, interpretation, transcription, website and software localization, language assessments, and other related language services to the…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchMaracay, VenezuelaHQ recorded Sep 20, 2026201-50074 contacts →

Exact match

“Ofrecemos:* Cursos de Inglés, Francés, Portugués, Italiano, Mandarín, Alemán, Ruso y Español para extranjeros.* Cursos In Company, dictados directamente en la sede de su empresa.*…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 942 language proficiency testing companies worldwide

See the full list, filter by size, metro and specialty, and access 1,530 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Language proficiency testing companies worldwide at a glance

As of Sep 20, 2026
11.1%Verified-email coverage
14.6Average contacts per company
11-50Median size (employees)
2.5%Largest-city concentration · Sao Paulo
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
462
11-50
323
51-200
111
201-500
27
501-1,000
9
1,001-5,000
5
5,001-10,000
2
10001+
1

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for language proficiency testing companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “language proficiency testing companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,530 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Language proficiency testing companies by location

4 lists · largest first

Every Language proficiency testing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “language proficiency testing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many language proficiency testing companies are there worldwide?

RevenueBase identified 942 company matches for language proficiency testing companies worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Cambridge English tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most language proficiency testing companies?

Brazil leads with 73 companies, followed by the United States (57) and France (48). Every language proficiency testing companies list by country and city is linked on this page.

Which city has the most language proficiency testing companies?

Sao Paulo leads with 24 company records, followed by London (13) and Bogota (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,530 professional contacts with verified work emails tracked across these 942 companies; direct dials are available where recorded.

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 SmartSearch, 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.