Company lists · Data refreshed November 2026

Top 25 Orthodox secondary schools worldwide

RevenueBase identified 2,319 company matches for orthodox secondary schools worldwide as of November 2026 and tracks 47,792 professional contacts across them, including 14,909 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for orthodox secondary 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 orthodox secondary 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
2,319Companies
47,792Contacts tracked
14,909Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest orthodox secondary schools worldwide

Ranked by team size
Top 25 of 2,319 company matches for orthodox secondary 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 matchUnited KingdomHQ recorded Nov 6, 2026n/a1,764 contacts →

Exact match

“St.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHardenberg, NetherlandsHQ recorded Nov 6, 2026201-500294 contacts →

Exact match

“Het Vechtdal College is een christelijke school voor voortgezet onderwijs in Noordoost-Overijssel.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchRancho Santa Margarita, CA, United StatesHQ recorded Nov 6, 202651-200272 contacts →

Exact match

“Santa Margarita Catholic High School seeks to bring the nurturing charism of Caritas Christi – the love of Christ – to our community of faith and learning.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchLo Barnechea, ChileHQ recorded Nov 6, 2026201-500272 contacts →

Exact match

“Instituto Hebreo is a Jewish school where 1250 students attend every day in Santiago, Chile.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchAlphen Aan Den Rijn, NetherlandsHQ recorded Nov 6, 2026501-1,000261 contacts →

Exact match

“SCOPE scholengroep is de grootste onderwijsorganisatie in Alphen aan den Rijn en omstreken.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchSydney, AustraliaHQ recorded Nov 6, 202651-200254 contacts →

Exact match

“Sydney Grammar School is an independent secular school for boys located in Sydney, Australia.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchNew York, United StatesHQ recorded Nov 6, 2026201-500245 contacts →

Exact match

“Founded in 1937, the Ramaz School is a co-educational Modern Orthodox day school, Nursery through 12th grade, in which intellectual growth and self-esteem are cultivated in a warm…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchSydney, AustraliaHQ recorded Nov 6, 2026201-500239 contacts →

Exact match

“From Early Learning to graduation, Moriah College students experience an exciting learning journey through which they're encouraged to develop their unique skills and abilities to…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchOlivos, ArgentinaHQ recorded Nov 6, 2026201-500228 contacts →

Exact match

“El Colegio Tarbut abrió sus puertas en 1961.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchRiverdale, NY, United StatesHQ recorded Nov 6, 2026201-500225 contacts →

Exact match

“Imagine a school with no walls or barriers, where every student is unique.welcome to SAR!”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHawthorn, AustraliaHQ recorded Nov 6, 202651-200220 contacts →

Exact match

“Bialik College is Melbourne's only cross-communal Jewish Zionist school, embracing an inclusive approach to Judaism.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 2026201-500214 contacts →

Exact match

“Milken is a home for personal growth and intellectual inquiry – a place where profound learning stimulates young minds and lays a strong foundation for spiritual practice and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchOrange, CA, United StatesHQ recorded Nov 6, 2026201-500214 contacts →

Exact match

“ABOUT US Orange Lutheran High School is a co-educational high school where students build a sound future with Christ as their leader.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchKhobar, Saudi ArabiaHQ recorded Nov 6, 202651-200214 contacts →

Exact match

“Established in 1965”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBarneveld, NetherlandsHQ recorded Nov 6, 2026201-500210 contacts →

Exact match

“Protestants Christelijke Scholengemeenschap voor mavo, havo, atheneum, gymnasium en technasium in Barneveld.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 2026201-500209 contacts →

Exact match

“O Colégio Israelita Brasileiro A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchDieren, NetherlandsHQ recorded Nov 6, 2026201-500204 contacts →

Exact match

“Het Rhedens is een school voor iedereen, die bekend staat vanwege de fijne sfeer en persoonlijke aandacht.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLondon, United KingdomHQ recorded Nov 6, 202651-200198 contacts →

Exact match

“In her 1560 charter, Queen Elizabeth I declared that Westminster pupils should be “liberally instructed in good books” and encouraged to develop enquiring, independent and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchCampinas, BrazilHQ recorded Nov 6, 2026201-500196 contacts →

Exact match

“Mais que um colégio, o Colégio Rio Branco Campinas é uma instituição de ensino que valoriza o aprendizado completo dos alunos, para que se tornem verdadeiros cidadãos.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchNijkerk, NetherlandsHQ recorded Nov 6, 202651-200189 contacts →

Exact match

“Het Corlaer College wil een school zijn waar leerlingen uitgedaagd worden het beste uit zichzelf te halen.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchVictoria, MN, United StatesHQ recorded Nov 6, 202651-200181 contacts →

Exact match

“Holy Family Catholic High School is a co-educational high school committed to helping young men and women realize their academic and spiritual potential.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchSao Paulo, BrazilHQ recorded Nov 6, 2026201-500180 contacts →

Exact match

“Inaugurado em 1922, o Colégio Renascença se tornou a primeira escola judaica de São Paulo.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchGold Coast, AustraliaHQ recorded Nov 6, 2026201-500174 contacts →

Exact match

“Coomera Anglican College is a co-educational P-12 College with over 1,400 students.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchDevizes, United KingdomHQ recorded Nov 6, 2026201-500167 contacts →

Exact match

“Dauntsey’s is a fully co-educational school with a Christian ethos, providing a friendly and supportive atmosphere where staff and pupils have every opportunity to fulfil their…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchNoble Park North, AustraliaHQ recorded Nov 6, 202651-200156 contacts →

Exact match

“Established in 1986 to provide catholic education to students in the surrounding area, Nazareth College boasts highly successful local and international education programs.”

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

Showing 25 of 2,319 orthodox secondary schools worldwide

See the full list, filter by size, metro and specialty, and access 14,909 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Orthodox secondary schools worldwide at a glance

As of Nov 6, 2026
31.2%Verified-email coverage
20.6Average contacts per company
11-50Median size (employees)
2.2%Largest-city concentration · London
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
600
11-50
665
51-200
753
201-500
140
501-1,000
38
1,001-5,000
26
5,001-10,000
1
10001+
7

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 orthodox secondary schools are linked below.
What qualifies
Company records worldwide whose business descriptions match “orthodox secondary 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 14,909 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.

Orthodox secondary schools by location

17 lists · largest first

Every Orthodox secondary 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 “orthodox secondary schools”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many orthodox secondary schools are there worldwide?

RevenueBase identified 2,319 company matches for orthodox secondary 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?

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

Which country has the most orthodox secondary schools?

The United States leads with 508 companies, followed by the United Kingdom (323) and Germany (207). Every orthodox secondary schools list by country and city is linked on this page.

Which city has the most orthodox secondary schools?

London leads with 50 company records, followed by New York (42) and Los Angeles (20).

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 14,909 professional contacts with verified work emails tracked across these 2,319 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.

Ready to reach these companies? Verified emails and direct dials for all 2,319 orthodox secondary schools worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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.