SIS Swiss International School

What SIS Swiss International School does

SIS Swiss International School is a private bilingual education group operating 20 day schools across Switzerland (8), Germany (7), Brazil (4), and Italy (1), serving approximately 5,000 students and employing 1,070 staff worldwide. Founded in 1999, the group delivers consistent bilingual classroom instruction in the national language and English from kindergarten through college, culminating in national diplomas and/or the International Baccalaureate (IB) Diploma Programme at 11 IB-accredited campuses. The organization is wholly owned by the Klett Group, a major German educational publisher, which provides capital and strategic backing rather than SIS relying on external venture funding.

The core product is a unified K-12 bilingual learning concept underpinned by structured day-school operations (fixed hours, lunch, supervised homework, flexible supervised periods) and a tech-enabled learning layer that introduces digital literacy, programming, media, and e-safety from kindergarten. Internally, the network runs on Microsoft Office 365 deployed across all Brazilian campuses for remote teaching and collaboration, while group-level IT is overseen by a dedicated IT leadership function (Bernhard Rieber, since 2016). Differentiated programs include an annual SIS Cup sports competition, Intercountry Activity exchange projects, a Teacher Exchange Programme (Germany/Switzerland to Brazil), and structured Leadership, Mentoring, and Professional Development pathways for staff. Quality assurance is centralized under a Chief Quality Officer (Janet Meister) and a Pädagogische Qualitätsentwicklung lead (Alexander Hall), providing group-wide pedagogical oversight uncommon in fragmented K-12 operators.

SIS generates revenue almost exclusively through recurring tuition fees (subscription/recurring revenue model) with pricing not publicly disclosed; scholarships are referenced but appear narrow in scope. The go-to-market is direct-to-consumer: families contact individual school offices, schedule visits, and apply directly via per-country websites (swissinternationalschool.ch, .de, .com.br, .it) and a central hub (bilingual.education). Customer segments are families seeking bilingual K-12 education, including internationally mobile families for whom network continuity is a key value driver, and working parents who need extended supervised care. A strategic partnership with Colegio Suizo de Madrid will add Spain as a fifth market from the 2026/27 school year, and a dedicated Business Development manager (Morris Müller, joined 2024) is actively evaluating additional locations in existing and new markets.

Name

SIS Swiss International School

Legal name

SIS Swiss International Schools Group AG

Website

https://bilingual.education

Company type

Private

Founded year

1999

Operating status

Operating

Short description

SIS Swiss International School is a private bilingual K-12 day-school group operating 20 campuses across Switzerland, Germany, Brazil, and Italy, serving about 5,000 students with IB and national diplomas; subsidiary of Klett Group.

Ownership category

akta.pro rank

Product category

Private K-12 Bilingual Education

NAICS

Elementary and Secondary Schools (611110), Elementary and Secondary Schools (6111)

SIC

Services-Educational Services (8200)

akta.pro primary industry

Language Immersion & Bilingual Private Schools (EDAJABAL)

akta.pro secondary industry

Classical Education K–12 Schools (EDAJABAF)

Keywords

• Bilingual education
• Private day school
• International baccalaureate
• Kindergarten to college
• Private K-12 schooling

Headquarters

HQ city

Männedorf

HQ country

Switzerland

HQ region

Europe

Offices5 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Tuition Fees: Private day school tuition from kindergarten through college. Families pay for bilingual education services with structured programs including lunch, supervised homework hours, and flexible supervised periods

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

SIS Swiss International School is a private day school group providing consistent bilingual classroom instruction in the national language and English from kindergarten through college. The network operates 20 schools across Switzerland, Germany, Brazil, and Italy (with Spain joining in 2026), enrolling approximately 5,000 students and preparing them for both national high school diplomas and the International Baccalaureate (IB) Diploma Programme. The full-day programme includes classroom instruction, lunch, supervised homework hours, and flexible supervised periods.

Product overview

SIS Swiss International School is a private bilingual education provider operating a unified learning concept from kindergarten through college across 20 school locations in Switzerland, Germany, Brazil, Italy, and Spain. The core offering is consistent bilingual instruction in the national language and English, preparing students for national high school diplomas and/or the International Baccalaureate (IB) Diploma Programme. The network also provides professional development services for teachers including leadership, mentoring, and professional development programmes, as well as international activities like the SIS Cup and Intercountry Activity. The organization is a company of the Klett Group.

Differentiator

Problem solved

Functional benefit

Products and services

• Kindergarten Programme Early childhood bilingual education for young learners delivered at SIS schools, focusing on learning through play and exploration in the national language and English. Targeted at families seeking bilingual early education.
• Primary School Programme Bilingual elementary education that strengthens students and gives them a voice in their learning process while promoting awareness and respect for other cultures. Subjects taught in the national language and English at SIS primary schools.
• Secondary School Programme Bilingual secondary education ensuring students acquire relevant technical vocabulary in both languages, with subjects taught approximately equally in the national language and English.
• Gymnasium / College Programme Upper secondary college education that prepares students for the national high school diploma and offers the International Baccalaureate (IB) Diploma Programme, a globally recognised university entrance qualification at SIS college-level schools.
• International Baccalaureate (IB) Diploma Programme Globally recognised university entrance qualification delivered alongside national diplomas at accredited IB World School campuses within the SIS network, enabling students to pursue higher education in their country or abroad.
• SIS Cup Annual two-day sports event where teams from all SIS schools compete in individual and team disciplines, promoting sportsmanship, fairness, and fun across the SIS network.
• Intercountry Activity Annual international exchange activity connecting students across SIS schools through collaborative projects such as math days, gift exchanges, storytelling, and digital exhibitions.
• Teacher Exchange Programme Internal programme that allows SIS teachers from Germany and Switzerland to live and work in Brazil for two to four years under attractive conditions, with a guaranteed position upon their return.
• Leadership Programme International leadership development programme for aspiring leaders, including group sessions on leadership and change management, coaching, school evaluation participation, and individual project implementation.
• Education for Sustainable Development Programme Student-led sustainability initiative organised across SIS schools with sustainability teams at each location, an action-oriented learning approach, and annual sustainability days for cross-school exchange.

Quantifiable outcome

• ~5,000 students across 20 schools
• +2 more outcomes

Named customers3 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Colegio Suizo de MadridcoreStrategic or Co-development Partner · 1 September 2026Strategic partnership between SIS Swiss International Schools Group and Colegio Suizo de Madrid. The school will be fully integrated into the international SIS network as of September 2026, expanding SIS presence to Spain.

Scale indicators6 records

Recent moves1 record

Expansion highlights5 records

Direct peers

• Phorms Education: Phorms operates a network of bilingual (German/English) day schools and kindergartens across Germany, with a similar K-12 bilingual model, recurring tuition revenue, and direct overlap in the German SIS footprint (Berlin, Frankfurt, Munich, etc.).
• Haut-Lac International Bilingual School: Haut-Lac is a Swiss private bilingual day school serving both local and internationally mobile families in the Lake Geneva region with K-12 instruction in French and English, directly comparable to SIS's Swiss bilingual campus model.
• Zurich International School (ZIS): ZIS is a private K-12 school in Zurich offering IB programmes and serving internationally mobile families, competing directly with SIS Zürich and SIS Männedorf-Zürich for the same expat and bilingual-family segments in the greater Zurich market.
• TASIS The American School in Switzerland: TASIS is a well-known Swiss international day and boarding school offering American curriculum and IB programmes to a global student body, competing with SIS for premium K-12 international education families in Switzerland.
• Bavarian International School: BIS is a private K-12 school in Bavaria offering bilingual instruction, IB programmes, and serving internationally mobile families — directly comparable to SIS Germany campuses such as Ingolstadt and Regensburg.
• International School of Stuttgart: ISS offers K-12 international education in the Stuttgart region including IB programmes, competing with SIS Stuttgart-Fellbach for English-speaking and internationally mobile families in southwestern Germany.
• Aiglon College: Aiglon is an international boarding school in Switzerland offering IB programmes to a globally diverse student body, overlapping with SIS on the Swiss international K-12 IB market with a similar premium brand positioning.
• Ecoles Benedictus: Benedictus operates private bilingual French/German or French/English day schools in Switzerland with a similar K-12 bilingual concept and recurring tuition model that compete with SIS in the Swiss market.

Broad incumbents

• Inspired Education Group: Inspired operates a large global portfolio of premium private K-12 schools across multiple countries, including bilingual and IB programmes — comparable business model at greater scale, making it a relevant strategic benchmark for SIS's expansion approach.

Others

• Klett Group (parent company entities): Klett Group is the parent conglomerate of SIS and one of Germany's largest educational publishers. As the owner, Klett provides SIS with content, distribution and capital — making it the key ecosystem / strategic partner rather than a competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries25 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about SIS Swiss International School