Company lists · Data refreshed September 2026

Top 25 Religious secondary schools based in the United States

Name: Religious secondary schools based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,447 companies tracked

RevenueBase identified 1,447 religious secondary schools headquartered in the United States as of September 2026 and tracks 31,397 professional contacts across them, including 10,065 with verified work emails. Chicago is the largest hub.

This list covers religious secondary schools headquartered in the United States, 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 21, 2026.

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 21, 2026 86% judged on-target in blind review

1,447Companies

31,397Contacts tracked

10,065Verified emails

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The 25 largest religious secondary schools based in the United States

Ranked by team size

Top 25 of 1,447 religious secondary schools based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to religious 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	Notre Dame High School	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	201-500	488 contacts →
	Partial evidence “Notre Dame High School is the preeminent Catholic coeducational college preparatory school in the City of Angels.” Source: RevenueBase Database · checked Sep 21, 2026
2	Marist School	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 21, 2026	51-200	323 contacts →
	Partial evidence “Marist School is an independent, Roman Catholic, college-preparatory day school enrolling approximately 1,100 boys and girls in grades seven through twelve.” Source: RevenueBase Database · checked Sep 21, 2026
3	The Episcopal Academy	Indirect evidence	Newtown Square, PA, United StatesHQ checked Sep 21, 2026	201-500	316 contacts →
	Indirect evidence “Challenging and nurturing Mind, Body, and Spirit, an Episcopal Academy education inspires boys and girls to lead lives of purpose, faith, and integrity.” Source: RevenueBase Database · checked Sep 21, 2026
4	Holy Trinity Catholic School	Indirect evidence	Des Moines, United StatesHQ checked Sep 21, 2026	51-200	310 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
5	Mater DEI High School	Partial evidence	Santa Ana, CA, United StatesHQ checked Sep 21, 2026	201-500	306 contacts →
	Partial evidence “Mater Dei High School, a co-educational college preparatory Diocesan Catholic high school, provides a holistic education and serves a diverse community of students committed to…” Source: RevenueBase Database · checked Sep 21, 2026
6	Georgetown DAY School	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	302 contacts →
	Partial evidence “Georgetown Day School offers an educational program that fosters a love of learning while providing serious instruction in the academic disciplines, the arts, and physical…” Source: RevenueBase Database · checked Sep 21, 2026
7	Valley Christian Schools SAN Jose	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	201-500	274 contacts →
	Partial evidence “Mission Statement Valley Christian Schools' mission is to provide a nurturing environment offering quality education supported by a strong foundation of Christian values in…” Source: RevenueBase Database · checked Sep 21, 2026
8	Santa Margarita Catholic High School	Partial evidence	Rancho Santa Margarita, CA, United StatesHQ checked Sep 21, 2026	51-200	273 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026
9	St. Thomas More Catholic School	Indirect evidence	St. Paul, MN, United StatesHQ checked Sep 21, 2026	n/a	272 contacts →
	Indirect evidence “MISSION: St.” Source: RevenueBase Database · checked Sep 21, 2026
10	ALL Saints Catholic School	Partial evidence	Canton, MI, United StatesHQ checked Sep 21, 2026	51-200	252 contacts →
	Partial evidence “Welcome to All Saints Catholic School!” Source: RevenueBase Database · checked Sep 21, 2026
11	Prestonwood Christian Academy	Indirect evidence	Plano, TX, United StatesHQ checked Sep 21, 2026	201-500	246 contacts →
	Indirect evidence “Prestonwood Christian Academy serves students across the Dallas Metroplex and virtually throughout the world.” Source: RevenueBase Database · checked Sep 21, 2026
12	Endeavor Schools	Partial evidence	Miami, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	239 contacts →
	Partial evidence “Endeavor Schools is passionate about unleashing individual potential so the students we serve thrive.” Source: RevenueBase Database · checked Sep 21, 2026
13	St. Thomas High School	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	51-200	221 contacts →
	Partial evidence “A Catholic college preparatory school for young men in grades 9-12, the student body is representative of the city of Houston and students come from more than 125 zip codes.” Source: RevenueBase Database · checked Sep 21, 2026
14	Austin Trinity Episcopal School	Partial evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	51-200	214 contacts →
	Partial evidence “Trinity Episcopal School is an inclusive, forward-thinking, faith-based K-8 school that meets each student where they are to nurture the whole child’s academic, social, physical…” Source: RevenueBase Database · checked Sep 21, 2026
15	Cathedral Catholic High School	Partial evidence	San Diego, CA, United StatesHQ checked Sep 21, 2026	51-200	207 contacts →
	Partial evidence “Mission Statement: Cathedral Catholic High School is an innovative academic community of lifelong learners grounded in the Catholic faith that prepares our graduates to live God's…” Source: RevenueBase Database · checked Sep 21, 2026
16	Orange Lutheran High School	Partial evidence	Orange, CA, United StatesHQ checked Sep 21, 2026	201-500	206 contacts →
	Partial evidence “ABOUT US Orange Lutheran High School is a co-educational high school where students build a sound future with Christ as their leader.” Source: RevenueBase Database · checked Sep 21, 2026
17	Sacred Heart Schools	Partial evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	51-200	192 contacts →
	Partial evidence “Sacred Heart Schools on Sheridan Road - the Academy of the Sacred Heart for Girls and Hardey Preparatory for Boys – are independent, Catholic, single-sex elementary schools…” Source: RevenueBase Database · checked Sep 21, 2026
18	Belen Jesuit Preparatory School	Partial evidence	Miami, FL, United StatesHQ checked Sep 21, 2026	51-200	190 contacts →
	Partial evidence “The Jesuits founded Belen Jesuit Preparatory School in 1854 in Havana, Cuba.” Source: RevenueBase Database · checked Sep 21, 2026
19	Dowling Catholic High School	Partial evidence	West Des Moines, IA, United StatesHQ checked Sep 21, 2026	51-200	185 contacts →
	Partial evidence “Dowling Catholic High School is committed to serving the Greater Des Moines Catholic community and embracing learners of all faiths.” Source: RevenueBase Database · checked Sep 21, 2026
20	Annie Wright Schools	Partial evidence	Tacoma, WA, United StatesHQ checked Sep 21, 2026	51-200	178 contacts →
	Partial evidence “Annie Wright Schools serve students from age three through high school.” Source: RevenueBase Database · checked Sep 21, 2026
21	Holy Family Catholic High School	Partial evidence	Victoria, MN, United StatesHQ checked Sep 21, 2026	51-200	177 contacts →
	Partial evidence “Holy Family Catholic High School is a co-educational high school committed to helping young men and women realize their academic and spiritual potential.” Source: RevenueBase Database · checked Sep 21, 2026
22	Christian Academy School System	Partial evidence	Louisville, KY, United StatesHQ checked Sep 21, 2026	201-500	175 contacts →
	Partial evidence “Christian Academy School System specializes in the educational pursuit of "developing students with a heart for God." The system was founded in September 1976, enrolling 120…” Source: RevenueBase Database · checked Sep 21, 2026
23	Bishop Feehan High School	Partial evidence	Attleboro, MA, United StatesHQ checked Sep 21, 2026	51-200	157 contacts →
	Partial evidence “Bishop Feehan High School is one of New England's premier Catholic co-educational, college preparatory schools located in Attleboro, Massachusetts.” Source: RevenueBase Database · checked Sep 21, 2026
24	Kellenberg Memorial High School	Indirect evidence	Uniondale, NY, United StatesHQ checked Sep 21, 2026	51-200	152 contacts →
	Indirect evidence “Kellenberg Memorial combines the proven curriculum and methods of a successful tradition with modern pedagogical advances to provide its students with a rich, qualitative…” Source: RevenueBase Database · checked Sep 21, 2026
25	Lancaster Mennonite School	Partial evidence	Lancaster, PA, United StatesHQ checked Sep 21, 2026	201-500	148 contacts →
	Partial evidence “Lancaster Mennonite School offers a comprehensive PreK-12 education in a nurturing and diverse environment characterized by the following distinctives:* Educational excellence *…” Source: RevenueBase Database · checked Sep 21, 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: religious 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 religious secondary schools.
Partial evidence: Its own public description names part of religious secondary schools, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name religious 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 1,447 religious secondary schools based in the United States

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Religious secondary schools based in the United States at a glance

As of Sep 21, 2026

32.1%Verified-email coverage

21.7Average contacts per company

11-50Median size (employees)

1.7%Largest-city concentration · Chicago

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

339

11-50

549

51-200

465

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,447 companies.

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 religious 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “religious 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 religious 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 religious secondary schools, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 10,065 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 21, 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.

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 religious 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 religious secondary schools are there based in the United States?

RevenueBase identified 1,447 religious secondary schools headquartered in the United States 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?

Notre Dame High School, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most religious secondary schools?

Chicago leads with 24 headquartered companies, followed by Houston (16) and New York (15).

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 10,065 verified decision-maker contacts tracked across these 1,447 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 21, 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.