Over 60 years educating
with the same spirit.
Private, non-denominational and co-educational. Inspired by the Institución Libre de Enseñanza. IB World School across all stages.
A private, independent school
in La Moraleja, since 1962.
Base International School is a private, co-educational, non-denominational and independent school with full autonomy over its educational project. We draw our inspiration from the Institución Libre de Enseñanza: critical thinking, intellectual freedom and mutual respect.
Everything we offer is brought together on a single campus in La Moraleja. We are part of Affinitas Education, an international network of over 20 schools.
We are a medium-sized school: large enough to offer first-class resources, small enough for every student to be known by name.
"At Base, every child is safe, well cared for and supported as an individual. We want them to feel valued, heard and motivated to become their very best."
Welcome to Base International School.
We offer a warm, family-oriented environment with an international curriculum that nurtures critical thinking and a global outlook. Our education is centred on each student, fostering multicultural exchange and combining academic rigour with the growth of the whole person.
With over 60 years of history, Base continues to innovate while staying true to what defines us: approachable teachers, personalised attention, and a relationship between student and educator built on warmth and mutual respect. That is what sets us apart and makes us who we are.
If you are considering Base for your family, the best way to get to know us is to visit. I'd love to welcome you.
Six decades of educational decisions,
one way of seeing the student.
From a small villa on Condes del Val to a 31,000 m² campus. Twelve milestones that tell the story of how we got here.
Three convictions that shape
how we teach.
These are decisions we make every day about how we treat our students, how we engage with families and how we prepare our teachers. They are lived, practised and felt in the daily life of the school.
Since our founding, we have championed an approach that is horizontal, dialogue-driven and respectful of each student's rhythm.
The teacher is an educator in the fullest sense: they accompany, guide and build genuine bonds. When they know a student over many years, education changes in nature.
It's right there in our educational charter: we see the student as a person, far beyond their role as a learner.
This has real, practical consequences in the team that supports them every day and in the individual attention each student receives from Preschool through to Bachillerato.
We are a liberal, non-denominational and independent school. Open to all political, religious, cultural and professional perspectives.
We develop students who are able to question, doubt and make their own choices. This tradition translates into concrete, everyday practices across all stages.
International accreditations and national rankings that recognise the Base project.
- IB World School · DP since 2016, MYP implemented, PYP implemented in 2024
- NABSS · National Association of British Schools in Spain
- ISA · International Schools Association, with consultative status at UNESCO
- UNESCO Associated Schools Network · RedPEA UNESCO
- Eco-Schools · ADEAC · International programme for education in sustainability
- ACADE · Association of Independent Private Schools in Spain
- Forbes · Among the best schools in Madrid and Spain, 2026
- El Español · 20th in the Top 100 Schools in Spain, 2026
- El Mundo · 28th in the Top 100 Schools in Spain, 2026, scoring 93 out of 100
- Premio Iberoamericano de Calidad · 2015, with EFQM 500+ seal
- Ambassador School for Children's Rights · Save the Children, 2012
- SIMO Educación 2025 · Speakers presenting a generative AI project in Early Years
Base is part of Affinitas Education,
a network of over 20 international schools.
Since 2024, we have been part of Affinitas Education, an international organisation that supports schools on their path to educational excellence. It respects the identity, culture and values of each school, while providing resources that raise quality and consistency of service.
- Sharing of best practices between schools with a common educational vision
- Access to resources, technology and innovative tools
- Ongoing professional development programmes for teaching staff
- Safeguarding and child protection as a shared, cross-cutting priority
- Real international connections for students and teachers
Base is still Base: liberal, non-denominational and independent. The network strengthens us. It doesn't rewrite us.
The people who
make the decisions.
A stable team with real names behind it, accessible to families. Each member of the leadership team coordinates their stage and takes responsibility for what happens in it.
Leads the senior leadership team at Base International School and the educational project that defines it: liberal, non-denominational and independent.
The Base community
is lived as a family.
At Base, families are part of the project. They have a dedicated person who supports them from day one, and regular opportunities to come into the school, see what goes on inside and speak directly with the people who make the decisions. That is how a community is built.
"The way they helped me build my confidence in English meant that by the time I was giving my first presentations at university, I was a step ahead of everyone else. You can't improvise that."
"The values I have are thanks to the school. I will always carry a little piece of Base with me, because it is the reason I am the person I am today."
Now that you know who we are,
come and see us.
An hour on campus is worth more than any website. A personalised visit lasts approximately 60 minutes: we show you the facilities, you meet the team and we answer everything you need to know. At your own pace, with no pressure at all. Most families who visit leave with their decision made.