Internationale Schule Berlin

What Internationale Schule Berlin does

Internationale Schule Berlin (ISB) is a private, state-recognized bilingual (German/English) day school operating in Berlin under the Private Kant-Schulen gGmbH (Private Kant Schools limited liability company) network. It serves approximately 620 students across grades 1–13, representing roughly 12 nationalities with about 75% German citizens, through two divisions: ISB-Grundschule (primary, grades 1–6) and ISB-Oberschule (secondary, integrated Sekundarschule with gymnasiale Oberstufe, i.e., upper secondary leading to university entrance, grades 7–13), the latter sharing Campus Steglitz with Kant-Oberschule. ISB's core pedagogy is immersive English from grade 1 via native speakers, with progressively expanded English-medium instruction in Biology, Physics, Economics, Art, and Geography; the school claims to be the only one in Berlin offering Economics taught in English, and it is the first IB (International Baccalaureate) World School in the network. Students graduate with state-recognized German qualifications (BBR, MSA, Abitur) plus a bilingual certificate and optional Cambridge IGCSE (Grade 10) and CAE (Grade 11) certifications. Supporting infrastructure includes the KANThall event venue, a jointly used school library, a House competitive system, the Feb 2023-launched Kant-Akademie for continuing education, and a ~500 sqm rooftop solar installation meeting roughly half of the building's electricity needs. The school was founded as part of the Kant-Schulen organization in 1959.

ISB's product surface is tightly focused on a single revenue line: recurring annual tuition billed in 12 monthly installments, with grade-dependent rates of EUR 7,680/year (Grundschule, partially offset by a Berlin lunch subsidy to EUR 6,480), EUR 7,080/year (Oberschule 7–11), and EUR 6,720/year (Oberschule 12–13). Auxiliary income comes from a EUR 250 one-time registration fee, Arbeitsgemeinschaften (after-school clubs/activities) and excursions, class trips, and external Cambridge examination fees, plus a marginal contribution from Kant-Akademie continuing-education programs. Sibling discounts and income-based tuition assistance reduce effective realized pricing, while Berlin state reimburses EUR 6.33 per child per school day for warm lunches in grades 1–6.

Go-to-market is sales-led and family-initiated: prospective parents submit an application with the last three school reports (Aufnahmeantrag), followed by a personal interview with school leadership whose decision drives admission. Top-of-funnel demand generation relies on open days (Tage der offenen Tür, typically March/April and October/November) and participation in Berlin education fairs (Bildungsmarkt, Tag der Freien Schulen Berlin). The school does not pursue geographic expansion beyond the Berlin metropolitan area, and there is no indication of external investment, M&A activity, or online/digital delivery models. Revenue predictability is high within a school year given committed tuition contracts, but the business remains a single-site, single-segment, capacity-constrained service operation.

Name

Internationale Schule Berlin

Legal name

Private Kant-Schulen gGmbH

Website

https://internationale-schule-berlin.de

Company type

Private

Founded year

1959

Operating status

Operating

Headcount range

11–50 employees

Short description

Internationale Schule Berlin (ISB) is a state-recognized private bilingual (German/English) day school serving about 620 students from grade 1 through Abitur, part of the Private Kant-Schulen gGmbH network in Berlin, targeting German and international families.

Ownership category

akta.pro rank

Product category

Private Bilingual K-12 Education

NAICS

Elementary and Secondary Schools (6111)

SIC

Services-Educational Services (8200)

akta.pro primary industry

Language Immersion & Bilingual Private Schools (EDAJABAL)

akta.pro secondary industry

Nonsectarian Independent Day Schools (EDAJABAA)

Keywords

• Bilingual education
• Private primary school
• Private secondary school
• German Abitur preparation
• Cambridge IGCSE preparation

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Tuition and fees: Annual tuition fees charged to families for school attendance. Grundschule tuition is EUR 7,680/year (reduced to EUR 6,480 with Berlin food subsidy), Oberschule (7-11) is EUR 7,080/year, and Oberschule (12-13) is EUR 6,720/year. Additional revenue from registration fees (EUR 250 one-time), AG activities, excursions, class trips, and external examinations.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Internationale Schule Berlin operates a private, state-recognized bilingual (German/English) day school in Berlin-Steglitz, delivering continuous education from grade 1 through the German Abitur. The school runs two main divisions — ISB-Grundschule (primary, grades 1–6) and ISB-Oberschule (secondary, grades 7–13) — with English-medium instruction across multiple subjects, a full-day care program, and a bilingual graduation certificate in addition to state-recognized diplomas.

Product overview

Internationale Schule Berlin (ISB) is a private, state-recognized bilingual (German/English) school offering a comprehensive educational pathway from primary school (Grundschule, grades 1–6) through upper secondary (Oberstufe, grades 7–13), culminating in the German Abitur with a bilingual certificate. The institution operates two main divisions — ISB-Grundschule and ISB-Oberschule — both emphasizing English immersion from grade 1 and progressively increasing English-medium instruction. The Oberschule shares its upper-secondary (gymnasiale Oberstufe) facilities with the adjacent Kant-Oberschule at Campus Steglitz, enabling a broader course offering. Supporting offerings include the Kant-Akademie (professional development), a House system, Cambridge examination preparation (CAE, IGCSE), extensive extracurricular activities (AGs), a joint school library, and the KANThall event venue. The school is part of the Private Kant-Schulen gGmbH group and is the sister institution of Berlin International School.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Students achieve Cambridge CAE levels of C1/C2 in English proficiency
• +1 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered minor.

• Deutsche Stiftung VölkerverständigungminorStrategic or Co-development Partner · 28 February 2026Co-hosts 'Auf in die Welt' fair at KANThall venue, providing information about exchange programs, high schools, boarding schools, private schools, gap years, language travel, au pair, volunteer services, internships, and work & travel. The fair includes exhibition of leading exchange organizations, agencies, international educational institutions, and advisory services.
• University of CambridgeminorStrategic or Co-development PartnerPartnership for Cambridge IGCSE (International General Certificate of Secondary Education) examinations for grade 10 students and CAE (Cambridge Advanced English) examinations for grade 11 students, providing internationally recognized certifications.

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Berlin International School: Sister institution within the same Private Kant-Schulen gGmbH umbrella, also offering international K-12 education in Berlin. Most directly comparable peer due to shared governance, shared Campus Steglitz facilities in upper secondary, and overlapping IB/Cambridge programs.
• Berlin Brandenburg International School (BBIS): Leading international K-12 school in the Berlin region offering IB Diploma and bilingual pathways to internationally mobile families. Directly competes with ISB for expat and German families seeking English-medium education from primary through Abitur equivalent.
• Berlin British School: British-curriculum international school in Berlin serving ages 3-18 with English-medium instruction. Competes directly with ISB for English-immersion-seeking families in the same Berlin market, particularly those prioritizing English-native pedagogy over bilingual German-English balance.
• John F. Kennedy German-American School Berlin: Bilingual German-American school in Berlin serving primary through secondary with state-recognized Abitur and US High School Diploma options. Comparable target market (German and international families) and similar bilingual positioning to ISB.
• Metropolitan School Berlin: State-recognized Berlin private school offering bilingual German/English education with an international orientation. Comparable in mission (bilingual pathway, international families, state-recognized diplomas) and similar in scale and price point to ISB.

Regional players

• Strothoff International School: International school in the Frankfurt Rhine-Main region offering bilingual and IB programs to internationally mobile families. Comparable in product (K-12, English-medium, IB) but serves a different geography than ISB, competing for German expat demand rather than the same Berlin families.
• École Française de Berlin: French-curriculum school in Berlin serving French-speaking expat and internationally oriented families. Indirect peer sharing the same international-education-seeking family pool in Berlin, though focused on French-medium rather than German-English bilingual delivery.
• ISR International School on the Rhine: International school near Düsseldorf offering IB and Cambridge programs to internationally mobile families. Comparable academic offering (IB, bilingual track, Cambridge exams) but in a different German metro, providing a regional benchmark rather than direct competition.

Broad incumbents

• Phorms Education: Larger Germany-wide operator of bilingual German/English schools and kindergartens with multiple campuses. Broader incumbent in the bilingual school category, offering comparable product across multiple cities and competing with ISB at the network level for German families seeking English immersion.

Others

• Senatsverwaltung für Bildung (Berlin Education Authority): Berlin state education authority that regulates ISB's Ersatzschule status and reimburses lunch subsidies. Not a competitor but a critical regulator and counterparty shaping ISB's operating economics and credentialing framework.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/internationale-schule-berlin

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries7 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 Internationale Schule Berlin