Blanche de Castille

What Blanche de Castille does

Blanche de Castille is a private Catholic K-12 and post-baccalaureate institution located in Le Chesnay-Rocquencourt, in the affluent Yvelines département near Versailles, France. The institution traces its origin to 1606, when Anne de Xainctonge founded the first schools of the Compagnie des soeurs de Sainte Ursule; it operates today under the tutelle of that religious order and through the Fondation ADX (est. 2016). It serves roughly 1,500–2,500 students across four divisions — École (primary), Collège (middle), Lycée (general baccalauréat and the specialty STD2A track), and CPGE (preparatory classes for the French grandes écoles) — across two campus sites in Le Chesnay-Rocquencourt.

The institution's core product is the continuous 15+ year educational pathway from primary through CPGE, augmented by an international credentialing stack: Cambridge Assessment Gold Centre status, the Academica Dual Diploma (parallel US high-school diploma), DSD (German), DELE (Spanish), and Pasch-Net partnerships. The technology stack is administrative and off-the-shelf — Google Analytics, e-sidoc, and École Directe — with no proprietary platform. Pedagogy is traditional and human-delivered, consistent with the religieuse tutelle and the Anne de Xainctonge pedagogical lineage.

The business model relies on tuition paid by families under a péréquation (sliding-scale) mechanism that adjusts fees to household income, supplemented by state forfaits under the contrat d'association and by the Fondation ADX. Reported outcomes include a 100% baccalauréat pass rate in 2025 (213 general candidates, 29 STD2A candidates). The institution has no fundraising history in the venture sense, no investor base, and no public revenue disclosure; its principal recent strategic moves are partnership-based (Château de Versailles from September 2021, Cambridge, Academica, university conventions) rather than financial or geographic expansion.

Name

Blanche de Castille

Legal name

Blanche De Castille

Website

https://blanche-de-castille.fr

Company type

Private

Founded year

1922

Operating status

Operating

Headcount range

251–500 employees

Short description

Blanche de Castille is a private Catholic K-12 and CPGE institution in Le Chesnay-Rocquencourt, France, delivering a continuous primary-through-grandes-écoles pathway to families in the Yvelines catchment under the tutelle of the Compagnie des soeurs de Sainte Ursule.

Ownership category

akta.pro rank

Product category

Private Catholic Education (K-12 and CPGE)

NAICS

Elementary and Secondary Schools (6111)

SIC

Services-Educational Services (8200)

akta.pro primary industry

International/Global Curriculum Schools (IB, Cambridge, etc.) (EDAJABAG)

Keywords

• Private catholic education
• Primary secondary education
• Preparatory classes cpge
• Bilingual international programs
• Catholic girls education

Headquarters

HQ city

Le Chesnay

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Tuition fees: Private Catholic school tuition revenue from enrolled students across École (nursery/primary), Collège (middle school), Lycée (high school), and CPGE (préparatory classes). The school operates a péréquation system based on family income.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Blanche de Castille is a private Catholic educational institution that delivers continuous schooling from maternelle (nursery) through post-baccalaureate across four divisions: École (primary), Collège (middle school), Lycée (high school with general and STD2A tracks), and Prépa (CPGE literary preparatory classes). It offers bilingual Cambridge International sections, a Dual Diploma French-American program, European language sections, and CPGE pipelines to ENS, Sciences Po, business schools, and CELSA, with tuition on a péréquation (income-based sliding scale) model.

Product overview

Blanche de Castille is a comprehensive Catholic educational institution offering a unified 4-cycle system from maternelle to post-bac across two sites. The institution is organized into four core divisions: École (primary), Collège (middle school), Lycée (high school with general and STD2A technological tracks), and Prépa (CPGE literary preparatory classes). Supporting programs include the Cambridge International Bilingual Section, Dual Diploma American-French program, European Sections (English, German, Spanish), and language certifications (DSD, DELE, Cambridge). The Fondation Anne de Xainctonge provides educational research support and oversees the institution's Christian-inspired mission. The Prépa division maintains university convention partnerships with Paris I, Sorbonne Nouvelle, Sorbonne Université, Paris Nanterre, and UVSQ for ECTS equivalences.

Differentiator

Problem solved

Functional benefit

Products and services

• École (Primary School) Primary school division (maternelle and élémentaire) serving young students as part of the four-cycle educational system from maternelle to post-baccalaureate, operated at the 19 rue Pasteur campus.
• Collège (Middle School) Middle school division offering bilingual sections, Cambridge certifications, and specialized pedagogical programs with international language options for students from 6e through 3e, operated at the 1 avenue de la Bretèche campus.
• Lycée (High School) High school division offering general and technological (STD2A) baccalaureate programs with specialization choices, bilingual sections, European sections, and the Dual Diploma program, operated at the 1 avenue de la Bretèche campus.
• Prépa (CPGE - Classes Pr\u00e9paratoires) Preparatory classes for grandes écoles (Hypokhâgne and Khâgne) offering intensive preparation for ENS, business schools, Sciences Po, and other competitive entrance exams, with specializations in Letters, History of Arts, Languages, and History-Geography. Includes externat services and meal plans.

Named customers2 records

Segments4 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

13 partnerships are on record, tiered core and minor.

• Cambridge EnglishcoreStrategic or Co-development PartnerCambridge International Examination partnership. The school is a registered Cambridge International School from Year 7 onwards, offering IGCSEs, AS Levels, and Cambridge language certifications (C1 Advanced, C2 Proficiency). Gold Centre status for Cambridge exams.
• Academica Dual DiplomacoreStrategic or Co-development PartnerPartnership allows students to obtain both the French Baccalauréat and US High School Diploma. Program includes online courses taught by native English speakers, with 6 additional credits required beyond French grades.
• Pasch-Net (Réseau Pasch-Schulen)minorStrategic or Co-development PartnerGerman language partnership under the Pasch-Schulen network (Schools: Partners for the Future), allowing free DSD II B2/C1 German language certification for students.
• APEL (Association des Parents d'Élèves de l'Enseignement Libre)minorOthersOfficial parent association for Catholic free schools in France. APEL de Blanche organizes events including the annual Forum des Métiers (career fair).
• Université Paris I Panthéon SorbonneminorOthersConvention partnership allowing CPGE students to earn university equivalences (ECTS) through the LMD system.
• Université Sorbonne Nouvelle Paris 3minorOthersConvention partnership allowing CPGE students to earn university equivalences (ECTS).
• Sorbonne UniversitéminorOthersConvention partnership allowing CPGE students to earn university equivalences (ECTS).
• Université Paris NanterreminorOthersConvention partnership allowing CPGE students to earn university equivalences (ECTS).
• Université Versailles Saint-Quentin Paris SaclayminorOthersConvention partnership allowing CPGE students to earn university equivalences (ECTS). Includes possibility for L2 law entry.
• ISIT-ASSASminorOthersDirect entry to 2nd year after Hypokhâgne, or 3rd year after Khâgne at ISIT (Institut de management et de communication interculturels).
• Sciences Po AixminorOthersDirect entry to 2nd year at Sciences Po Aix after Khâgne through convention.
• Château de VersaillescoreStrategic or Co-development PartnerPartnership since September 2021 allows History of Arts students to complete a 6-hour cultural mediation training module and participate in mediation missions during extraordinary events at the Palace.
• Fonds Anne de Xainctonge (ADX Foundation)coreOthersCivil foundation created in 2016 to perpetuate educational mission. Supports pedagogical research, welcomes disengaged youth for CAP training, and organizes heritage classes for primary students.

Scale indicators3 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Sainte-Geneviève (Ginette): Private Catholic school in Versailles offering 4-cycle education (collège, lycée, CPGE) with both literary and scientific preparatory classes. Highly comparable to Blanche de Castille on full-pathway Catholic education with elite CPGE track serving Greater Paris.
• Sainte-Croix de Neuilly: Prestigious private Catholic school in Neuilly-sur-Seine covering maternelle through lycée, with strong bilingual and international programs. Closely comparable on the Catholic K-12 college-prep model serving affluent western Paris families.
• Saint-Louis de Gonzague (Franklin): Catholic K-12 school in Paris's 16th arrondissement known for academic excellence and competitive preparatory classes. Comparable as a top-tier Catholic K-12 with integrated CPGE offering in the Greater Paris area.
• Saint-Jean de Passy: Catholic K-12 school in Paris's 16th arrondissement offering bilingual sections and European options. Comparable on the Catholic K-12 college-prep model serving western Paris families.
• École Jeannine Manuel: International bilingual K-12 school in Paris with strong Cambridge/IB programs and reputation for academic excellence. Comparable as a private school emphasizing bilingual international curriculum and serving Paris-based families seeking global credentials.
• Marymount International School Paris: Catholic international school in Boulogne-Billancourt offering IB and US-track programs from nursery through high school. Comparable on the Catholic + international curriculum model serving families seeking globally recognized credentials.
• École Alsacienne: Prestigious private (non-religious) K-12 school in Paris 6th known for academic rigor and bilingual options. Comparable as a high-fee private K-12 alternative in central Paris competing for the same affluent families.
• Lycée Stanislas: Catholic school in Paris offering full collège-lycée-CPGE pathway with strong international (Cambridge, IGCSE) and literary prépa offerings. Highly comparable on the combined K-12 + CPGE literary model with international programs.
• Institut de l'Assomption: Catholic school network (Assomption) offering K-12 education with multiple Paris-area campuses. Comparable as a Catholic K-12 institution with similar ethos and bilingual/international positioning.
• Lycée Sainte-Barbe: Catholic school in Paris with strong CPGE literary and scientific classes. Comparable on the integrated post-bac preparatory offering targeting grandes écoles admissions, sharing Blanche de Castille's CPGE positioning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/etablissement-scolaire-blanche-de-castille-lechesnay
• Instagraminstagram.com/blanche_de_castille_officiel/?hl=fr

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries1 record

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 Blanche de Castille