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SEK International School El Castillo

Providing quality international private education

at our schools for over 130 years

What is SEK El Castillo Primaria
About SEK

"SEK places individual freedom above all else"

1st SEK Convention, 1969

Everything we do at our Madrid IB ® school is based on supporting our students to become questioning, innovative leaders fit for the 21st century 

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Why SEK?

A unique environment for global citizens

We nurture an open-minded community where people from diverse cultures and nationalities live and study -- a place everyone can call "home"

learn about Life at SEK

Quick facts

A passion for learning is a passion for life


University Acceptance Rate



IB ® Student Pass Rate


Average IB ® Diploma mark/Average world mark


Student faculty ratio


Student Nationalities


Interscholastic Teams

University Bound

Our university career's guidance scheme is designed to be an extension of the overall SEK-El Castillo IB® education taking place in the classroom, in boarding, and in each active learning venue

See our University Path

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