Company lists · Data refreshed November 2026

Top 25 Online high schools worldwide

RevenueBase identified 2,744 company matches for online high schools worldwide as of November 2026 and tracks 110,120 professional contacts across them, including 20,904 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for online high schools 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 November 6, 2026. Country and city lists for online high schools 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 Nov 6, 2026 How this list was built
2,744Companies
110,120Contacts tracked
20,904Verified emails
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The 25 largest online high schools worldwide

Ranked by team size
Top 25 of 2,744 company matches for online high schools worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchPhoenix, AZ, United StatesHQ recorded Nov 6, 20265,001-10,00013,474 contacts →

Exact match

“University of Phoenix has helped pioneer online education since launching online courses in 1989.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchReston, VA, United StatesHQ recorded Nov 6, 20265,001-10,0002,926 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchNew York, United StatesHQ recorded Nov 6, 2026n/a2,743 contacts →

Exact match

“Launched in 2013, OpenClassrooms has become one of the largest online education and training platforms in Europe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchReston, VA, United StatesHQ recorded Nov 6, 20261,001-5,0002,401 contacts →

Exact match

“K12 is an online K–12 education provider operating under Stride, Inc, a publicly traded company headquartered in Reston, Virginia, serving students across all 50 states and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchSchaumburg, IL, United StatesHQ recorded Nov 6, 20265,001-10,0002,309 contacts →

Exact match

“Perdoceo Education Corporation is a leading educational services company and the parent organization of American InterContinental University (AIU), Trident at AIU, and Colorado…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchOrlando, FL, United StatesHQ recorded Nov 6, 20261,001-5,0002,264 contacts →

Exact match

“We believe people thrive when they’re given freedom, trust, and the opportunity to make a difference.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchAreekode, IndiaHQ recorded Nov 6, 2026501-1,0001,366 contacts →

Exact match

“Welcome to Interval Learning!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSalt Lake City, UT, United StatesHQ recorded Nov 6, 2026501-1,0001,315 contacts →

Exact match

“BYU-Pathway Worldwide provides affordable, fully online higher education to students in more than 180 countries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchMountain View, CA, United StatesHQ recorded Nov 6, 2026n/a1,187 contacts →

Exact match

“Breakthroughs start here.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchBangalore, IndiaHQ recorded Nov 6, 2026201-5001,169 contacts →

Exact match

“At 21K School, we believe that every child deserves an education that’s made just for them.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSao Paulo, BrazilHQ recorded Nov 6, 202610001+1,156 contacts →

Exact match

“Educação que chega e leva mais longe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchProvidencia, ChileHQ recorded Nov 6, 2026201-5001,086 contacts →

Exact match

“Instituto Profesional IACC 100% Online, es co-fundador del Sistema de Educación Privada en Chile.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchColumbia, MD, United StatesHQ recorded Nov 6, 20261,001-5,0001,000 contacts →

Exact match

“Connections Academy is a tuition-free, fully accredited public education program for students in grades K–12.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 20261,001-5,000878 contacts →

Exact match

“Bridgepoint Education (BPI) is a higher education company built upon innovation and a passion for learning.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchScranton, PA, United StatesHQ recorded Nov 6, 2026501-1,000856 contacts →

Exact match

“At Penn Foster Group, we are transforming online learning to help learners by bringing together Penn Foster, CareerStep, Ashworth College, James Madison High School, the New York…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 20261,001-5,000808 contacts →

Exact match

“Founded in 2011, Epic Charter Schools (Epic) is Oklahoma’s largest public virtual charter school – and among the largest of its kind in the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchJakarta Selatan, IndonesiaHQ recorded Nov 6, 2026201-500798 contacts →

Exact match

“Sekolah Murid Merdeka (SMM) is a blended-learning school that combines offline and online learning through a personalized approach.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchUnited StatesHQ recorded Nov 6, 2026n/a743 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchSão Paulo, BrazilHQ recorded Nov 6, 20265,001-10,000621 contacts →

Exact match

“Flexibilidade de tempo, espaço e dinheiro tornou a educação a distância uma opção viável e eficiente para quem pensa em investir no aprimoramento acadêmico e profissional.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchWarren, PA, United StatesHQ recorded Nov 6, 202651-200596 contacts →

Exact match

“Allied Schools, an online education institution and member of the Colibri Group education network, is committed to providing affordable, high-quality vocational coursework…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchAmman, JordanHQ recorded Nov 6, 2026201-500587 contacts →

Exact match

“Abwaab is an online learning platform that allows students to learn at their own pace, test themselves and get ahead with our expert tutors anytime and anywhere.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchIrvine, CA, United StatesHQ recorded Nov 6, 20261,001-5,000567 contacts →

Exact match

“At UMass Global (University of Massachusetts Global), our mission is to change our adult learners' lives through education.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026201-500497 contacts →

Exact match

“As New York's leading online school since 2006, the CUNY School of Professional Studies (CUNY SPS) offers the most online bachelor's and master's degree options at the City…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchKing Of Prussia, PA, United StatesHQ recorded Nov 6, 2026501-1,000451 contacts →

Exact match

“At Agora, we provide students the opportunity to engage in a personalized, innovative education that inspires and prepares them to reach their highest potential, both academically…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200447 contacts →

Exact match

“20 million students.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 2,744 online high schools worldwide

See the full list, filter by size, metro and specialty, and access 20,904 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Online high schools worldwide at a glance

As of Nov 6, 2026
19.0%Verified-email coverage
40.1Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
931
11-50
1,023
51-200
470
201-500
150
501-1,000
57
1,001-5,000
59
5,001-10,000
18
10001+
19

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 online high schools are linked below.
What qualifies
Company records worldwide whose business descriptions match “online high schools” 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 20,904 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 November 6, 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.

Online high schools by location

13 lists · largest first

Every Online high schools list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “online high schools”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many online high schools are there worldwide?

RevenueBase identified 2,744 company matches for online high schools worldwide as of November 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?

University Of Phoenix tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most online high schools?

The United States leads with 807 companies, followed by Brazil (234) and India (208). Every online high schools list by country and city is linked on this page.

Which city has the most online high schools?

London leads with 39 company records, followed by Sao Paulo (31) and Toronto (23).

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 20,904 professional contacts with verified work emails tracked across these 2,744 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 November 6, 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.