Company lists · Data refreshed September 2026

Top 25 International schools based in Switzerland

Name: International schools based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 408 companies tracked

RevenueBase identified 408 international schools headquartered in Switzerland as of September 2026 and tracks 12,656 professional contacts across them, including 2,838 with verified work emails. Zurich is the largest hub.

This list covers international schools headquartered in Switzerland, 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

408Companies

12,656Contacts tracked

2,838Verified emails

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The 25 largest international schools based in Switzerland

Ranked by team size

Top 25 of 408 international schools based in Switzerland, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to international 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	International School Of Geneva	Strong evidence	Genève, SwitzerlandHQ checked Sep 20, 2026	1,001-5,000	747 contacts →
	Strong evidence “Welcome to the International School of Geneva - Bienvenue à l'Ecole Internationale de Genève.” Source: RevenueBase Database · checked Sep 20, 2026
2	Primarschule	Indirect evidence	Feuerthalen, SwitzerlandHQ checked Sep 20, 2026	201-500	386 contacts →
	Indirect evidence “Primarschule is a company based out of Switzerland.” Source: RevenueBase Database · checked Sep 20, 2026
3	SIS Swiss International School	Strong evidence	Männedorf, SwitzerlandHQ checked Sep 20, 2026	1,001-5,000	324 contacts →
	Strong evidence “SIS Swiss International School is a group of private day schools offering bilingual education from kindergarten through to college.” Source: RevenueBase Database · checked Sep 20, 2026
4	Zurich International School	Strong evidence	Wadenswil, SwitzerlandHQ checked Sep 20, 2026	201-500	298 contacts →
	Strong evidence “Zurich International School is an inclusive non-profit day school in the Greater Zurich area that delivers comprehensive bilingual and international educational programs for local…” Source: RevenueBase Database · checked Sep 20, 2026
5	International School Of ZUG And Luzern	Strong evidence	Baar, SwitzerlandHQ checked Sep 20, 2026	201-500	250 contacts →
	Strong evidence “The International School of Zug and Luzern (ISZL) is a non-profit, co-educational day school from Early Years to Grade 12 (ages 3-19) serving the international community of…” Source: RevenueBase Database · checked Sep 20, 2026
6	EF Academy	Partial evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	501-1,000	226 contacts →
	Partial evidence “EF Academy, Private Day and Boarding Schools, with three modern, campuses in New York, Pasadena and Oxford, opens a world of opportunities for high school students by providing…” Source: RevenueBase Database · checked Sep 20, 2026
7	International School Basel	Strong evidence	Reinach, SwitzerlandHQ checked Sep 20, 2026	201-500	216 contacts →
	Strong evidence “International School Basel is a private, not-for-profit, co-educational day school established in 1979.” Source: RevenueBase Database · checked Sep 20, 2026
8	Tasis-Switzerland	Indirect evidence	Doro, SwitzerlandHQ checked Sep 20, 2026	51-200	199 contacts →
	Indirect evidence “Founded by M.” Source: RevenueBase Database · checked Sep 20, 2026
9	Institut Florimont - Genève	Indirect evidence	Petit-lancy, SwitzerlandHQ checked Sep 20, 2026	51-200	194 contacts →
	Indirect evidence “Du jardin d'enfants aux portes de l'université : maternelle, primaire, cycle, collège, lycée L’Institut Florimont forme depuis 1905 des jeunes capables de se situer dans le monde.” Source: RevenueBase Database · checked Sep 20, 2026
10	International School Of Lausanne	Strong evidence	Le Mont-sur-lausanne, SwitzerlandHQ checked Sep 20, 2026	201-500	193 contacts →
	Strong evidence “The International School of Lausanne is a not-for-profit, English-language day school that emphasises academic excellence and rigour in a supportive school and family environment.” Source: RevenueBase Database · checked Sep 20, 2026
11	Aiglon College	Strong evidence	Chesières, SwitzerlandHQ checked Sep 20, 2026	201-500	183 contacts →
	Strong evidence “Aiglon College is an international, private co-educational boarding school in the Swiss alps.” Source: RevenueBase Database · checked Sep 20, 2026
12	Feusi Bildungszentrum	Partial evidence	Bern, SwitzerlandHQ checked Sep 20, 2026	201-500	173 contacts →
	Partial evidence “We are a goal-oriented, recognised and owner-managed private school group.” Source: RevenueBase Database · checked Sep 20, 2026
13	Academia Group Switzerland AG	Indirect evidence	Basel, SwitzerlandHQ checked Sep 20, 2026	1,001-5,000	172 contacts →
	Indirect evidence “Academia ist einer der grössten privaten Bildungsanbieter in der Schweiz.” Source: RevenueBase Database · checked Sep 20, 2026
14	ICS Inter-Community School Zurich	Strong evidence	Zumikon, SwitzerlandHQ checked Sep 20, 2026	201-500	164 contacts →
	Strong evidence “Founded in 1960, ICS Inter-Community School Zurich is the oldest international school in the Greater Zurich Area and today, one of its most forward-looking.” Source: RevenueBase Database · checked Sep 20, 2026
15	Leysin American School In Switzerland	Partial evidence	Leysin, SwitzerlandHQ checked Sep 20, 2026	51-200	142 contacts →
	Partial evidence “With a mission statement of “Developing innovative, compassionate and responsible citizens of the world", Leysin American School is an independent boarding school located in the…” Source: RevenueBase Database · checked Sep 20, 2026
16	Institut International DE Lancy - IIL	Partial evidence	Grand-lancy, SwitzerlandHQ checked Sep 20, 2026	201-500	137 contacts →
	Partial evidence “For more than 120 years, IIL has offered students an international education of excellence, combining academic rigour and personal development.” Source: RevenueBase Database · checked Sep 20, 2026
17	Ecole Moser	Indirect evidence	Chêne-bougeries, SwitzerlandHQ checked Sep 20, 2026	201-500	132 contacts →
	Indirect evidence “L'école MOSER est un établissement privé, fondé en 1961 par Henri Moser.” Source: RevenueBase Database · checked Sep 20, 2026
18	Haut-Lac International Bilingual School	Indirect evidence	St-légier, SwitzerlandHQ checked Sep 20, 2026	51-200	101 contacts →
	Indirect evidence “At Haut-Lac we believe that a holistic approach to education which is adapted to the developmental stages of the children and adolescents in our care is the only way forward.” Source: RevenueBase Database · checked Sep 20, 2026
19	Alpadia Language Schools	Strong evidence	Montreux, SwitzerlandHQ checked Sep 20, 2026	51-200	92 contacts →
	Strong evidence “Alpadia Language Schools is a Swiss company with an international vision, devoted to excellence in teaching languages to enrich students' futures.” Source: RevenueBase Database · checked Sep 20, 2026
20	Institut AUF DEM Rosenberg	Indirect evidence	St. Gallen, SwitzerlandHQ checked Sep 20, 2026	51-200	90 contacts →
	Indirect evidence “Institut auf dem Rosenberg, the Artisans of Education®, offers a uniquely personalised and future-focused educational experience, where academic excellence is combined with…” Source: RevenueBase Database · checked Sep 20, 2026
21	Institut Montana Zugerberg AG	Strong evidence	Zugerberg, SwitzerlandHQ checked Sep 20, 2026	51-200	81 contacts →
	Strong evidence “Institut Montana Switzerland has been a truly Swiss international day and boarding school since 1926.” Source: RevenueBase Database · checked Sep 20, 2026
22	Lyceum Alpinum Zuoz	Strong evidence	Zuoz, SwitzerlandHQ checked Sep 20, 2026	51-200	79 contacts →
	Strong evidence “The Lyceum Alpinum Zuoz is an international boarding school with a history stretching back over 120 years, located near St.” Source: RevenueBase Database · checked Sep 20, 2026
23	LE Régent International School	Strong evidence	Crans Montana, SwitzerlandHQ checked Sep 20, 2026	51-200	76 contacts →
	Strong evidence “Welcome to Le Régent International School!” Source: RevenueBase Database · checked Sep 20, 2026
24	St. George's International School, Switzerland	Indirect evidence	Clarens / Montreux, SwitzerlandHQ checked Sep 20, 2026	51-200	75 contacts →
	Indirect evidence “St.” Source: RevenueBase Database · checked Sep 20, 2026
25	LA Garenne International School	Partial evidence	Chesières, SwitzerlandHQ checked Sep 20, 2026	51-200	68 contacts →
	Partial evidence “Family-owned Swiss IB Diploma Boarding and Day school since 1947.” 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: international 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 international schools.
Partial evidence: Its own public description names part of international schools, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international 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 408 international schools based in Switzerland

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International schools based in Switzerland at a glance

As of Sep 20, 2026

22.4%Verified-email coverage

31.0Average contacts per company

11-50Median size (employees)

6.1%Largest-city concentration · Zurich

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

156

11-50

134

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 408 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 international 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 Switzerland whose own description of what they do matches “international 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 international 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 international schools, and records with no verified work email. Companies headquartered outside Switzerland 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, 2,838 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.

International schools by metro

International schools in Zurich25

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 international 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 international schools are there based in Switzerland?

RevenueBase identified 408 international schools headquartered in Switzerland 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?

International School Of Geneva, headquartered in Geneve, tops this list with the largest team on record.

Which city has the most international schools?

Zurich leads with 25 headquartered companies, followed by Lausanne (18) and Bern (12).

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 2,838 verified decision-maker contacts tracked across these 408 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.