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SEK International School El Castillo has reinforced its national educational leadership by being ranked among the best schools in Spain according to the rankings published by El Mundo, El Español and Forbes. This recognition strengthens the positioning of SEK Education Group as one of the leading institutions in private and international education in Spain.
In the ranking published by El Español, SEK-El Castillo holds second place, which—together with the presence of the six SEK schools in Spain within the national Top 10—confirms the strength of a shared, coherent, and well-established educational model implemented across all SEK institutions.
Meanwhile, in El Mundo’s “100 Best Schools” ranking, SEK-El Castillo shows a positive evolution by moving up one position in the national ranking, reaching 30th place with 92 points, one point more than the previous year. This improvement confirms the upward trend observed in recent years: in 2025 the school ranked 31st with 91 points, in 2024 34th with 90 points, and in 2023 33rd with 91 points, demonstrating steady progress within the national ranking.
In the 2026 Forbes List of the 100 Best Schools, SEK-El Castillo stands out for combining the Spanish national curriculum (LOMLOE) with the full International Baccalaureate continuum, offering students in the final stage the option of pursuing either the IB Diploma or the Spanish Baccalaureate in Arts, Humanities and Social Sciences, or Science and Technology. Its global outlook is reflected in initiatives such as SEKMUN —the first school Model United Nations in Spain— as well as international certifications and technological projects including collaborations with NASA’s Jet Propulsion Laboratory, F1 in Schools, and FIRST LEGO League.
SEK Education Group, a benchmark among Spain’s best schools
These annual rankings evaluate the best schools in Spain based on academic, pedagogical, and organizational criteria that analyze the quality of each school’s educational project, academic results, methodological innovation, personalized attention, and international outlook.
The educational model of SEK Education Group is built on a combination of academic excellence, rigorous curricula, and student-centered active methodologies, developed in multilingual environments with a strong international perspective. The integration of innovation and technology applied to learning, together with a comprehensive education based on values and the development of global competencies, shapes a coherent educational project shared by all its schools.
This approach places SEK schools among the best private schools in Spain and among the educational institutions with the strongest international outlook in the country, consolidating their prestige within the national educational landscape.
Spain’s best schools ranking: consolidated leadership
Being included among the best schools in Spain in 2026 is not the result of a one-time recognition but of a sustained trajectory of educational quality. SEK Education Group maintains a constant presence in the country’s main national rankings, confirming the consistency of its educational project and its ability to adapt to new educational challenges.
This new milestone consolidates SEK Education Group as one of the most prestigious educational institutions in Spain and reinforces its leadership within the private education sector.
Commitment to educational excellence in Spain
The recognition achieved in the 2026 rankings also represents an endorsement of the daily work of the leadership teams, teachers, and professionals who are part of SEK schools in Spain, as well as the trust placed in them by families.
SEK Education Group thus reaffirms its commitment to transformative, international, and innovative education, aimed at preparing students academically while fostering responsible citizens committed to global society.
