Skip To Main Content

Welcome from the Principal

Welcome from the Principal

Dear families,

It gives us great pleasure to welcome you to SEK International School El Castillo and to the new 22-23 school year.

Since 1972, SEK-El Castillo has offered an exceptional education, based on innovation, professional development and the will to always undertake new and interesting projects. We trust that this will be the beginning of a lasting relationship, where we will learn from each other and where together we will collaborate to carry out our mission of educating balanced and open-minded international students, with a solid holistic preparation to face the challenges of the 21st century.

In a world that evolves at a dizzying pace, which is increasingly interrelated, we have the responsibility, as a leading school, to be capacity to constantly update and adapt. This is our goal, because we know that the school stage is the foundation on which the lives of our students are based and that is why we tackle this great challenge with enthusiasm.

A diverse community of over fifty nationalities is proud to call SEK International El Castillo its home. The school is welcoming and supportive, allowing international students and families a successful transition to their new environment.

Accredited by the most important international organisations in education such as the International Baccalaureate (IB) and the New England Association of Schools and Colleges (NEASC), SEK-El Castillo is recognised for its dedication to academic excellence and for offering well-developed programmes in sport, art, community service and applied learning.

Our caring and passionate faculty deliver a superior IB international curriculum and pioneering programmes that guide students to success in life.

The rigorous and holistic education offered at SEK-El Castillo prepares our graduates for the best universities in the world. Whether they are juniors or soon to graduate, our students are empowered to apply their learning to real-life challenges.

Using an applied learning approach, purpose-built spaces, and age-appropriate integration of technology, our faculty provide authentic learning experiences that engage students in relevant and impactful ways.

As an international school, it is also a priority for us to develop an educational system that is characterised by the freedom to decide, design and implement the solutions that we consider to be the best for the different challenges posed by society.

We also enthusiastically welcome this great academic year to celebrate the 50th anniversary of SEK International School El Castillo with the desire, passion and enthusiasm to celebrate and share with you all our outstanding results and for these fifty years to be an example to continue growing and achieving the best of success in terms of the excellence and quality of our educational project.

All the staff, and I, welcome you to our school.

Yours sincerely,

Eloísa López

Principal of Private School SEK-El Castillo




Spanish and English


Mon – Fri from 09:30 to 17:30


For boys and girls


Private, non-denominational, independent, co-educational. From 0 to 18 years of age.


French, German and Chinese, with native-speaking teachers.


Pioneers in Spain teaching

IB® Programmes

Primary Years Programme (PYP)

Middle Years Programme (MYP)

Diploma Programme (DP)

SEK-El Castillo


Urb. Villafranca del Castillo

Castillo de Manzanares, s/n Villanueva de la Cañada     28692 Madrid, Spain


Phone: (+34) 918150892

Fax: (+34) 918151140

Opening hours for visits:

9.30 - 17.30