Company lists · Data refreshed September 2026

Top 25 Private high schools based in Australia

Name: Private high schools based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 411 companies tracked

RevenueBase identified 411 private high schools headquartered in Australia as of September 2026 and tracks 13,056 professional contacts across them, including 4,919 with verified work emails. Melbourne is the largest hub.

This list covers private high schools headquartered in Australia, 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 20, 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 20, 2026 86% judged on-target in blind review

411Companies

13,056Contacts tracked

4,919Verified emails

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The 25 largest private high schools based in Australia

Ranked by team size

Top 25 of 411 private high schools based in Australia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to private high 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	Catholic Education Diocese Of Wollongong	Partial evidence	Wollongong, AustraliaHQ checked Sep 20, 2026	1,001-5,000	673 contacts →
	Partial 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 20, 2026
2	The King's School	Partial evidence	North Parramatta, AustraliaHQ checked Sep 20, 2026	201-500	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 20, 2026
3	Knox Grammar School	Indirect evidence	Wahroonga, AustraliaHQ checked Sep 20, 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 20, 2026
4	Melbourne Grammar School	Partial evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	201-500	343 contacts →
	Partial evidence “Melbourne Grammar School is one of Australia’s leading independent schools with a tradition of excellence extending over more than 160 years.” Source: RevenueBase Database · checked Sep 20, 2026
5	Mentone Grammar	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	201-500	244 contacts →
	Indirect evidence “Mentone Grammar is the benchmark for outstanding coeducation in bayside Melbourne.” Source: RevenueBase Database · checked Sep 20, 2026
6	North Shore Coaching College	Indirect evidence	Chatswood, AustraliaHQ checked Sep 20, 2026	501-1,000	239 contacts →
	Indirect evidence “North Shore Coaching College is Australasia’s leading tuition college, with over 65 campuses in Australia.” Source: RevenueBase Database · checked Sep 20, 2026
7	Penleigh And Essendon Grammar School	Partial evidence	Keilor East, AustraliaHQ checked Sep 20, 2026	201-500	230 contacts →
	Partial evidence “Penleigh and Essendon Grammar is a school for boys and girls with campuses located in Essendon, Moonee Ponds and Keilor East.” Source: RevenueBase Database · checked Sep 20, 2026
8	Yarra Valley Grammar	Indirect evidence	Ringwood, AustraliaHQ checked Sep 20, 2026	51-200	205 contacts →
	Indirect evidence “Yarra Valley Grammar overlooks the Yarra Valley and picturesque Dandenong Ranges.” Source: RevenueBase Database · checked Sep 20, 2026
9	Sceggs Darlinghurst	Partial evidence	Darlinghurst, AustraliaHQ checked Sep 20, 2026	51-200	187 contacts →
	Partial evidence “SCEGGS is a unique school in the heart of Australia's busiest city, with a small population of 900 students from Kindergarten to Year 12.” Source: RevenueBase Database · checked Sep 20, 2026
10	Coomera Anglican College	Indirect evidence	Gold Coast, AustraliaHQ checked Sep 20, 2026	201-500	169 contacts →
	Indirect evidence “Coomera Anglican College is a co-educational P-12 College with over 1,400 students.” Source: RevenueBase Database · checked Sep 20, 2026
11	ST Laurence's College	Partial evidence	South Brisbane, AustraliaHQ checked Sep 20, 2026	201-500	153 contacts →
	Partial evidence “St Laurence's College is a Catholic School for boys in the Edmund Rice Tradition.” Source: RevenueBase Database · checked Sep 20, 2026
12	Amity College	Partial evidence	Prestons, AustraliaHQ checked Sep 20, 2026	201-500	147 contacts →
	Partial evidence “An independent school for K-12 grades that aims for academic excellence and equity for all students at four campuses Auburn K-6, Illawarra K-12, Prestons K-12, and Leppington K-3” Source: RevenueBase Database · checked Sep 20, 2026
13	Oxford Falls Grammar	Partial evidence	Oxford Falls, AustraliaHQ checked Sep 20, 2026	51-200	146 contacts →
	Partial evidence “Oxford Falls Grammar is a thriving co-educational Kindergarten-Year 12 Christian school providing educational excellence, encompassing the spiritual, physical, emotional, social…” Source: RevenueBase Database · checked Sep 20, 2026
14	Brisbane State High School	Strong evidence	South Brisbane, AustraliaHQ checked Sep 20, 2026	51-200	146 contacts →
	Strong evidence “Since 1921, Brisbane State High School has come to symbolise and exemplify excellence in public school education.” Source: RevenueBase Database · checked Sep 20, 2026
15	The Hutchins School	Partial evidence	Sandy Bay, AustraliaHQ checked Sep 20, 2026	201-500	145 contacts →
	Partial evidence “The Hutchins School is located approximately five kilometres from the CBD of Hobart, Tasmania’s capital city, and twenty minutes from the Hobart airport.” Source: RevenueBase Database · checked Sep 20, 2026
16	Redlands College	Indirect evidence	Wellington Point, AustraliaHQ checked Sep 20, 2026	201-500	141 contacts →
	Indirect evidence “Redlands College has been intentionally building a Christ-centred learning community of excellence for over 30 years.” Source: RevenueBase Database · checked Sep 20, 2026
17	Caroline Chisholm Catholic College	Indirect evidence	Braybrook, AustraliaHQ checked Sep 20, 2026	201-500	138 contacts →
	Indirect evidence “Caroline Chisholm Catholic College is dedicated to learning excellence in a faith-filled, engaged and supportive environment.” Source: RevenueBase Database · checked Sep 20, 2026
18	Cardijn College	Partial evidence	Noarlunga Downs, AustraliaHQ checked Sep 20, 2026	51-200	127 contacts →
	Partial evidence “Cardijn College is a Catholic co-educational secondary school situated 25kms south of Adelaide in the beautiful Southern Vales area.” Source: RevenueBase Database · checked Sep 20, 2026
19	Donvale Christian College	Partial evidence	Donvale, AustraliaHQ checked Sep 20, 2026	201-500	125 contacts →
	Partial evidence “Donvale Christian College is a non-denominational and co-educational school located in the outer eastern suburbs of Melbourne.” Source: RevenueBase Database · checked Sep 20, 2026
20	Reddam House	Indirect evidence	Bondi Beach, AustraliaHQ checked Sep 20, 2026	201-500	123 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
21	Trinity College South Australia	Indirect evidence	Evanston South, AustraliaHQ checked Sep 20, 2026	501-1,000	122 contacts →
	Indirect evidence “Trinity College is a co-educational College of excellence, open to all in a disciplined, caring Christian environment.” Source: RevenueBase Database · checked Sep 20, 2026
22	Hills Grammar	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	51-200	120 contacts →
	Partial evidence “Hills Grammar is a truly independent, intentionally co-educational, proudly diverse, and inclusive school located in the Hills District, providing an education for children from…” Source: RevenueBase Database · checked Sep 20, 2026
23	Heathdale Christian College	Indirect evidence	Werribee, AustraliaHQ checked Sep 20, 2026	201-500	117 contacts →
	Indirect evidence “Heathdale Christian College is a thriving Christian learning community serving families across Melbourne's west through campuses in Werribee and Melton.” Source: RevenueBase Database · checked Sep 20, 2026
24	Ormiston College	Partial evidence	Ormiston, AustraliaHQ checked Sep 20, 2026	51-200	116 contacts →
	Partial evidence “Ormiston College has an outstanding reputation for providing its students with quality private education.” Source: RevenueBase Database · checked Sep 20, 2026
25	Salesian College Sunbury	Indirect evidence	Sunbury, AustraliaHQ checked Sep 20, 2026	201-500	116 contacts →
	Indirect evidence “Salesian College Sunbury is celebrating 95 years of education in 2022.” Source: RevenueBase Database · checked Sep 20, 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: private 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 private high schools.
Partial evidence: Its own public description names part of private high schools, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name private 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 411 private high schools based in Australia

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Private high schools based in Australia at a glance

As of Sep 20, 2026

37.7%Verified-email coverage

31.8Average contacts per company

51-200Median size (employees)

1.2%Largest-city concentration · Melbourne

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

111

51-200

158

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 411 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 private 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.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “private 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 private 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 private high schools, and records with no verified work email. Companies headquartered outside Australia 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, 4,919 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 20, 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 private 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 private high schools are there based in Australia?

RevenueBase identified 411 private high schools headquartered in Australia 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?

Catholic Education Diocese Of Wollongong, headquartered in Wollongong, tops this list with the largest team on record.

Which city has the most private high schools?

Melbourne leads with 5 headquartered companies, followed by Sydney (4) and Berwick (3).

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 4,919 verified decision-maker contacts tracked across these 411 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 20, 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.