Company lists · Data refreshed September 2026
Top 25 All-boys high schools worldwide
RevenueBase identified 1,653 all-boys high schools worldwide as of September 2026 and tracks 66,129 professional contacts across them, including 23,320 with verified work emails. The United States is the largest market and London the largest hub.
This list covers all-boys high 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 all-boys high 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.
The 25 largest all-boys high schools worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 957 contacts → | ||||
Indirect evidence “Mission: To assist young men in their formation as leaders and men for others through rigorous college preparation in the Jesuit tradition.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 710 contacts → | ||||
Indirect evidence “Welcome to American Leadership Academy, where we combine academic excellence and character development to create an exceptional educational experience.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 613 contacts → | ||||
Partial evidence “Established in 1831, The King's School is located on 320 acres in the heart of Australia's largest global city.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 572 contacts → | ||||
Strong evidence “Bosco Tech is an all-male Catholic high school sponsored by the Salesians of Don Bosco, USA West, that uniquely combines a rigorous college-preparatory and technology-focused…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 531 contacts → | ||||
Indirect evidence “Established in 1924, we are proud of our innovative approach to education.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 515 contacts → | ||||
Partial evidence “Trinity aims to provide boys with a thoroughly Christian education.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 509 contacts → | ||||
Strong evidence “Army and Navy Academy is an internationally recognized college-preparatory military boarding school for boys, grades 7-12 that follows University of California standards and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 500 contacts → | ||||
Indirect evidence “Culver Academies is a values-based, mission-driven, vision-inspired institution that has been developing courageous leaders of honorable character, who are global citizens and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 473 contacts → | ||||
Indirect evidence “Athens College is one of Greece's premier Pre K-12 nonprofit educational institutions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 446 contacts → | ||||
Partial evidence “At Scotch College, we provide a holistic, values-based education that strives to prepare boys for fulfilling, meaningful lives of contribution.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 439 contacts → | ||||
Partial 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, 2026Thanks. The Data Team will review it. | |||||
| 12 | 411 contacts → | ||||
Partial evidence “Harrow School is one of the world’s most well-known schools.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 394 contacts → | ||||
Partial evidence “St Stithians College is a prominent and transformative South African school – one that inspires excellence and makes a world of difference.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 389 contacts → | ||||
Partial evidence “Upper Canada College inspires boys to become their best selves at a place where tradition, excellence and innovation meet.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 354 contacts → | ||||
Strong evidence “Today Brisbane Grammar School opens its doors to boys from Years 5 to 12, with 100 boarders calling the School home.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 340 contacts → | ||||
Partial evidence “Saint Andrew’s School is a nationally recognized junior kindergarten (pre-k) through grade 12, day and boarding, college preparatory school in Boca Raton, Florida, in southern…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 329 contacts → | ||||
Partial evidence “Shrewsbury School was founded by Edward VI by Royal Charter in 1552, and it was identified as one of the ‘Great’ public schools by the Clarendon Commission 1868.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 327 contacts → | ||||
Strong evidence “Crescent School is an independent day school for boys in Grades 3 to 12, located in Toronto, Canada.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 327 contacts → | ||||
Partial evidence “Holy Trinity School (HTS) is a co-educational, JK-Grade 12, independent day school that provides a safe, structured, and supportive environment for students to develop character…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 326 contacts → | ||||
Indirect evidence “St.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 322 contacts → | ||||
Partial evidence “The Blake School is a pre-kindergarten–grade 12, independent day school in the Upper Midwest with a national reputation for academics.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 316 contacts → | ||||
Partial 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 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 303 contacts → | ||||
Strong evidence “Brunswick is a college-preparatory day school for boys of genuine potential and differing backgrounds in Pre-Kindergarten through grade 12.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 293 contacts → | ||||
Partial evidence “Located five minutes from Chattanooga's vibrant downtown, Baylor is a coed, college preparatory, day/boarding school for students in grades 6-12.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 287 contacts → | ||||
Strong evidence “Gilman is a pre-kindergarten through twelfth-grade independent college preparatory school in Baltimore, Maryland, educating boys in mind, body, and spirit.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: all-boys high 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 all-boys high schools.
- Partial evidence
- Its own public description names part of all-boys high schools, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name all-boys high 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 1,653 all-boys high schools worldwide
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All-boys high schools worldwide at a glance
As of Sep 19, 2026Companies by employee count
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 all-boys high 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 all-boys high schools are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “all-boys high 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 all-boys high 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 all-boys high 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, 23,320 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.
All-boys high schools by location
7 lists · largest firstEvery All-boys high schools list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- All-boys high schools based in the United States576
- All-boys high schools based in the United Kingdom230
- All-boys high schools based in India93
- All-boys high schools based in Australia90
- All-boys high schools based in South Africa52
- All-boys high schools based in Canada43
- All-boys high schools based in New Zealand31
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 all-boys high 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 all-boys high schools are there worldwide?
RevenueBase identified 1,653 all-boys high 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?
St. Xavier High School, headquartered in Cincinnati, tops this list with the largest team on record.
Which country has the most all-boys high schools?
The United States leads with 576 companies, followed by the United Kingdom (230) and India (93). Every all-boys high schools list by country and city is linked on this page.
Which city has the most all-boys high schools?
London leads with 35 headquartered companies, followed by New York (17) and Houston (10).
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 23,320 verified decision-maker contacts tracked across these 1,653 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.