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A dual British-Spanish education for children aged 1-18
Nurtured every step of the way
Sharing our core values: resilience, respect and responsibility
A vibrant school community creating social impact
Together
We're extraordinary
The International English School of Castellón (IESC)
is a private British school offering an integrated dual English and Spanish curriculum for children aged 1–18. Our students are encouraged to become confident learners, compassionate individuals and globally minded citizens, while receiving the support and guidance to discover their strengths and reach their full potential. We believe education should extend beyond academic success, equipping young people with the knowledge, skills and values they need to thrive in life.
Early Years
Learning begins in English and Spanish
Primary
Understanding key concepts in two languages
Secondary
Preparing for the IGCSE exams alongside Spanish subjects
Sixth Form
Studying for A-levels and PCE exams
University and Beyond
Preparing for a successful future study in Spain or further afield
Discover our school
Discover our school
Book a visit
Come and see us at the International English School of Castellón
Open days
Discover IESC by attending one of our Open Days
Our facilities
Learn more about our school facilities
Dukes Education
Find out more about the Dukes Education Group
Stay connected with everything
![From International English School of Castellón to Medicine: Martina Godoy’s experience]([{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_1/v1783410762/eliansbritishschoollanuciadukes6/ssijphnnxdvmdfbkflqn/Diseosinttulo.png","width":256},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_2/v1783410762/eliansbritishschoollanuciadukes6/ssijphnnxdvmdfbkflqn/Diseosinttulo.png","width":512},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_3/v1783410762/eliansbritishschoollanuciadukes6/ssijphnnxdvmdfbkflqn/Diseosinttulo.png","width":800},{"url":"https://resources.finalsite.net/images/f_auto,q_auto/v1783410762/eliansbritishschoollanuciadukes6/ssijphnnxdvmdfbkflqn/Diseosinttulo.png","width":1080}])
From International English School of Castellón to Medicine: Martina Godoy’s experience
Just a year ago, Martina Godoy was completing her final stage at International English School of Castellón. Today, she is studying Medicine in her first year at the Universitat de València, one of the most demanding degree courses in higher education. Her recent journey offers a valuable perspective on the transition from school to university and invites reflection on which tools are truly decisive when a new academic stage begins.
![International English School of Castellón Named “School of the Year” at the 2026 Dukes European Awards]([{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_1/v1783410935/eliansbritishschoollanuciadukes6/bsntxo0o0pn2fujw4tbk/Diseosinttulo3.jpg","width":256},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_2/v1783410935/eliansbritishschoollanuciadukes6/bsntxo0o0pn2fujw4tbk/Diseosinttulo3.jpg","width":512},{"url":"https://resources.finalsite.net/images/f_auto,q_auto,t_image_size_3/v1783410935/eliansbritishschoollanuciadukes6/bsntxo0o0pn2fujw4tbk/Diseosinttulo3.jpg","width":800},{"url":"https://resources.finalsite.net/images/f_auto,q_auto/v1783410935/eliansbritishschoollanuciadukes6/bsntxo0o0pn2fujw4tbk/Diseosinttulo3.jpg","width":1080}])
International English School of Castellón Named “School of the Year” at the 2026 Dukes European Awards
This is a monumental achievement and serves as the highest honor within the Dukes Education family. To be chosen for this top spot from among 22 different schools across 7 countries in Europe is a testament to the incredible work we do every single day.