Base I

Colegio Base is a private international school located in La Moraleja, Alcobendas, catering to students aged 1 to 18 years. Secular and independent since 1962, it maintains the same project and values throughout all stages, allowing students to grow within the same community from their first steps to graduation. The profile includes the second cycle of Early Childhood Education (3-6 years) and services and facilities such as a swimming pool, library, football field, cafeteria, school transport, and extracurricular activities.

In Early Childhood Education, with groups of twelve students per classroom, English is the medium of instruction from the first year with native educators, and the school day runs from 9:00 AM to 5:00 PM, with free optional extended hours from 7:30 AM to 9:00 AM and from 5:00 PM to 6:30 PM. In Primary, subjects such as Science, Art, and inquiry units are taught in English by native or bilingual teachers, using project-based learning with IB methodology; by the end of 6th grade, students reach Cambridge B1 level, and from 5th grade, they study French or German. In Secondary, the IB PAI is taught with interdisciplinary projects, students achieve Cambridge C1 in 4th year of ESO, and at 16 years old, they present a personal project to the educational community.

In Bachillerato, the National Bachillerato is offered, with three modalities, and the IB Diploma Programme, with the PAI and authorized Diploma, and the PEP in process. In the 2025-26 cohort, 97.5% passed the PAU, with an average grade of 7.89 out of 10, and in the IB Diploma, the average score was 33 out of 45, with a maximum of 42. Students achieve Cambridge C2 upon completing this stage, and the school prepares French (DELF) and German (Goethe Institut) exams. From 2nd year of ESO, students can pursue the American Dual Bachillerato, compatible with the National and Diploma, allowing them to obtain both the Spanish title and the American High School diploma. Well-being is a cross-cutting axis, with staff training in safeguarding and a protocol against bullying. The school is a UNESCO and ISA School and is part of the Eco-Schools network, with 94% of the teaching staff having more than one year at the school, averaging twelve years.