SEK International School El Castillo
International School in Madrid
Quick answer
SEK International School El Castillo is part of the SEK group's Madrid network, delivering IB pathway education. The school is accredited by IBO. Annual tuition runs in Madrid's IB-school tier. Admissions are moderate; best suited to internationally mobile families wanting SEK-network access in Madrid with full IB pathway, as part of the broader SEK Spanish premium school network.
Key facts
- Curriculum: IB taught at SEK International School El Castillo.
- Tuition: $10,000–$18,000/yr published annual range.
- Avg class size: 20 (max 25) Madrid international school · 1,050 students total.
- 45 nationalities top: After the Spanish nationality, the second nationality is the Chinese followed by the American (USA)..
- Ages: 4-18 school day starts at It starts at 09.00.
- Accreditations: IBO, CIS verified.
1,050
45 (After the Spanish nationality, the second nationality is the Chinese followed by the American (USA).)
20 avg / 25 max
Rolling
IBO, CIS
About SEK International School El Castillo
Innovative educational model based on stimulating learning spaces, English immersion and the development of talent, creativity and emotional intelligence. Our mission is educating balanced and open-minded international students with a solid holistic preparation to face global challenges. We have launched the SEK Future Learning Model, which optimises the use of our digital ecosystem and the school's indoor and outdoor spaces, allowing us to offer personal learning experiences through active methodologies that promote the development of skills vital to navigate our changing world. We deliver conceptual learning that promotes autonomy, leadership and entrepreneurship making our students active global citizens.
| Item | Amount |
|---|---|
| Annual tuition (USD) | $10,000 – $18,000 |
| Fee year | 2025-2026 |
| True annual cost (with hidden fees)how we calculate | $15,800(+13%) |
| First-year total (with registration + deposit) | $17,300 |
| Cost position in Madrid | 93th percentile(premium tier) |
Hidden costs & fee notes
Part of SEK Education Group (multiple campuses). Full IB continuum (PYP/MYP/DP). Bilingual Spanish-English. Boarding available. Registration ~€3,000.
IB
Tests to apply to different universities around the world. Cambridge language tests. Official Royal Academy and Trinity examinations in musical instruments and voice. Diploma Programme Examinations PAU test for Spanish universities. Mathematics and science tests.
Excellent academic results.
Chinese, French, German as language B or language acquisition at different levels and stages of learning. Chinese as a subject in the Diploma Programme as Language B and as extracurricular activity.
From the Counselling and Pedagogical Department, working on inclusion in the curriculum and providing diversity in assessments. Our language policy states the various opportunities to develop one or both of our languages of instruction. Our educational technology has resources to enhance skills for students with special needs and also language learning.
We have developed an inclusion policy aligned with the IB special needs requirements and are always working on diversity and differentiation, though we do not carry out significant curricular adaptations.
We deliver language acquisition in both English and Spanish (languages of instruction) in phases, this allows us to place students in the phase that is appropriate for their level. We also offer two specific academic language programmes called EAL ( English as additional language) and SAL ( Spanish as an Additional Language) Students can also study Chinese, French and German as part of our for mother tongue celebration programme.
It starts at 09.00 – It ends at 17.00
Yes, we provide lunch and snacks at different times of the day.
Yes, we offer special diets and these are supervised and validated by the nutrition service.
Recommended neighborhoods
Villanueva de la Cañada, Boadilla, Las Rozas, Majadahonda
Is SEK International School El Castillo right for your family?
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At a Glance
Fee Position in Madrid
Mid-rangeSchool Profile
Class Size
Student Diversity
Highly diverse
Common: After the Spanish nationality, the second nationality is the Chinese followed by the American (USA).
Estimated Real Cost
Tuition + registration, transport, uniform, exams
Part of SEK Education Group (multiple campuses). Full IB continuum (PYP/MYP/DP). Bilingual Spanish-English. Boarding available. Registration ~€3,000.
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