Company lists · Data refreshed September 2026

Top 25 Catholic secondary schools worldwide

Name: Catholic secondary schools worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 4,735 companies tracked

RevenueBase identified 4,735 catholic secondary schools worldwide as of September 2026 and tracks 132,739 professional contacts across them, including 43,284 with verified work emails. The United States is the largest market and London the largest hub.

This list covers catholic secondary 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 19, 2026. Country and city lists for catholic secondary 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

4,735Companies

132,739Contacts tracked

43,284Verified emails

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The 25 largest catholic secondary schools worldwide

Ranked by team size

Top 25 of 4,735 catholic secondary schools worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to catholic secondary 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	Toronto Catholic District School Board	Strong evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	10001+	5,730 contacts →
	Strong evidence “The Toronto Catholic District School Board (TCDSB) is one of the largest school boards in Canada – serving more than students in more than 195 Catholic schools in the city of…” Source: RevenueBase Database · checked Sep 19, 2026
2	Brisbane Catholic Education	Partial evidence	Brisbane, AustraliaHQ checked Sep 19, 2026	10001+	3,652 contacts →
	Partial evidence “Brisbane Catholic Education (BCE) is a vibrant, faith-filled learning community committed to providing an education to believe in.” Source: RevenueBase Database · checked Sep 19, 2026
3	Calgary Catholic School District	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	5,001-10,000	2,512 contacts →
	Partial evidence “We educate and empower students from kindergarten to Grade 12 through our mission of Living and Learning in our Catholic Faith so that students, centred in Christ, realize their…” Source: RevenueBase Database · checked Sep 19, 2026
4	Catholic Schools Parramatta Diocese	Strong evidence	North Parramatta, AustraliaHQ checked Sep 19, 2026	5,001-10,000	1,736 contacts →
	Strong evidence “Catholic Schools Parramatta Diocese is located in one of the fastest growing areas of New South Wales.” Source: RevenueBase Database · checked Sep 19, 2026
5	York Catholic District School Board	Strong evidence	CanadaHQ checked Sep 19, 2026	1,001-5,000	1,466 contacts →
	Strong evidence “Elementary and Secondary education is provided for students at over 100 schools located throughout the region of York.” Source: RevenueBase Database · checked Sep 19, 2026
6	London District Catholic School Board	Strong evidence	London, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	1,223 contacts →
	Strong evidence “The London District Catholic school system has approximately students in 44 elementary and 9 secondary schools, which provide a full range of education experiences from Junior…” Source: RevenueBase Database · checked Sep 19, 2026
7	Durham Catholic District School Board	Strong evidence	Oshawa, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	1,120 contacts →
	Strong evidence “The Durham Catholic District School Board shares a sense of community among families, educators and parishes and is committed to integrating the teachings of the Gospel with…” Source: RevenueBase Database · checked Sep 19, 2026
8	Wecdsb	Partial evidence	Windsor, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	990 contacts →
	Partial evidence “MISSION STATEMENT In keeping with the virtues of our Catholic faith, we are called to know every student, to inspire them to follow the example of Jesus, and empower them with the…” Source: RevenueBase Database · checked Sep 19, 2026
9	Niagara Catholic District School Board	Indirect evidence	Welland, CanadaHQ checked Sep 19, 2026	1,001-5,000	957 contacts →
	Indirect evidence “We're honoured to be recognized as one of Canada's Best Employers 2025 by Forbes.” Source: RevenueBase Database · checked Sep 19, 2026
10	Edmonton Catholic Schools	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	5,001-10,000	792 contacts →
	Partial evidence “People often ask "Why Catholic education?” Source: RevenueBase Database · checked Sep 19, 2026
11	Melbourne Archdiocese Catholic Schools	Partial evidence	East Melbourne, AustraliaHQ checked Sep 19, 2026	10001+	681 contacts →
	Partial evidence “290 schools.” Source: RevenueBase Database · checked Sep 19, 2026
12	Hamilton-Wentworth Catholic District School Board	Strong evidence	Hamilton, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	680 contacts →
	Strong evidence “Over 160 years of extraordinary dedication to the development of children Since 1855, the Hamilton-Wentworth Catholic District School Board has built a tradition of excellence…” Source: RevenueBase Database · checked Sep 19, 2026
13	Catholic Education Diocese Of Wollongong	Strong evidence	Wollongong, AustraliaHQ checked Sep 19, 2026	1,001-5,000	673 contacts →
	Strong evidence “Catholic Education Diocese of Wollongong is the largest provider of non-government schools in the Macarthur, Illawarra, Southern Highlands and Shoalhaven.” Source: RevenueBase Database · checked Sep 19, 2026
14	Simcoe Muskoka Catholic District School Board	Strong evidence	Barrie, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	641 contacts →
	Strong evidence “With 53 schools, over students and more than 4,500 employees, the Simcoe Muskoka Catholic District School Board (SMCDSB) is an education community bound together by our beliefs.” Source: RevenueBase Database · checked Sep 19, 2026
15	Peterborough Victoria Northumberland And Clarington Catholic District School Board	Strong evidence	Peterborough, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	562 contacts →
	Strong evidence “At Peterborough Victoria Northumberland and Clarington (PVNC) Catholic District School Board, our Vision is rooted in community, formed in faith, ready to change the world.” Source: RevenueBase Database · checked Sep 19, 2026
16	St. Clair Catholic District School Board	Indirect evidence	Wallaceburg, ON, CanadaHQ checked Sep 19, 2026	1,001-5,000	557 contacts →
	Indirect evidence “The St.” Source: RevenueBase Database · checked Sep 19, 2026
17	Knox Grammar School	Indirect evidence	Wahroonga, AustraliaHQ checked Sep 19, 2026	501-1,000	531 contacts →
	Indirect evidence “Established in 1924, we are proud of our innovative approach to education.” Source: RevenueBase Database · checked Sep 19, 2026
18	Notre Dame High School	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	201-500	488 contacts →
	Strong evidence “Notre Dame High School is the preeminent Catholic coeducational college preparatory school in the City of Angels.” Source: RevenueBase Database · checked Sep 19, 2026
19	UBEC	Indirect evidence	Brasilia, BrazilHQ checked Sep 19, 2026	5,001-10,000	483 contacts →
	Indirect evidence “Fundada em 1972, a União Brasiliense de Educação e Cultura – UBEC surgiu com o objetivo de manter instituições católicas de ensino, proporcionando uma rede de educação sólida e de…” Source: RevenueBase Database · checked Sep 19, 2026
20	Immaculate Conception School	Strong evidence	Minneapolis, United StatesHQ checked Sep 19, 2026	n/a	473 contacts →
	Strong evidence “Immaculate Conception Catholic School is a Catholic School filled with the rich traditions of those who have attended these past 70 years and will continue to be a faith-filled…” Source: RevenueBase Database · checked Sep 19, 2026
21	ST Joseph's College Hunters Hill	Strong evidence	Hunters Hill, AustraliaHQ checked Sep 19, 2026	201-500	439 contacts →
	Strong evidence “St Joseph’s College Hunters Hill has a proud reputation as one of Australia’s leading independent Catholic schools.” Source: RevenueBase Database · checked Sep 19, 2026
22	Catholic Education, Archdiocese Of Canberra And Goulburn	Strong evidence	Manuka, AustraliaHQ checked Sep 19, 2026	1,001-5,000	422 contacts →
	Strong evidence “Catholic Education Archdiocese of Canberra and Goulburn comprises 56 systemic schools across the Australian Capital Territory and New South Wales.” Source: RevenueBase Database · checked Sep 19, 2026
23	St. Mary School	Indirect evidence	Riverside, IL, United StatesHQ checked Sep 19, 2026	n/a	415 contacts →
	Indirect evidence “Our mission is to provide the children of St.” Source: RevenueBase Database · checked Sep 19, 2026
24	St. Patrick School	Indirect evidence	United StatesHQ checked Sep 19, 2026	51-200	414 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	ST Joseph High School	Indirect evidence	Trumbull, CT, United StatesHQ checked Sep 19, 2026	51-200	358 contacts →
	Indirect evidence “St.” Source: RevenueBase Database · checked Sep 19, 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: catholic secondary 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 catholic secondary schools.
Partial evidence: Its own public description names part of catholic secondary schools, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name catholic secondary 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 4,735 catholic secondary schools worldwide

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Catholic secondary schools worldwide at a glance

As of Sep 19, 2026

32.6%Verified-email coverage

28.0Average contacts per company

11-50Median size (employees)

1.2%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

1,005

11-50

1,536

51-200

1,684

201-500

253

501-1,000

1,001-5,000

5,001-10,000

10001+

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 catholic secondary 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 catholic secondary schools are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “catholic secondary 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 catholic secondary 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 catholic secondary 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, 43,284 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 19, 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.

Catholic secondary schools by location

19 lists · largest first

Every Catholic 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 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 catholic secondary 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 catholic secondary schools are there worldwide?

RevenueBase identified 4,735 catholic secondary 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?

Toronto Catholic District School Board, headquartered in Toronto, tops this list with the largest team on record.

Which country has the most catholic secondary schools?

The United States leads with 1,917 companies, followed by the United Kingdom (463) and Australia (339). Every catholic secondary schools list by country and city is linked on this page.

Which city has the most catholic secondary schools?

London leads with 59 headquartered companies, followed by Chicago (41) and New York (31).

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 43,284 verified decision-maker contacts tracked across these 4,735 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 19, 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.