The International Baccalaureate (IB) has become a global benchmark for academic excellence, developing curious, independent learners with a truly international outlook. Increasingly popular among UK families, the IB offers a distinctive alternative to A levels: broad, challenging, and designed to nurture critical thinking and global awareness.
From day and boarding schools with established IB traditions to new entrants offering innovative approaches, these are the schools setting the standard for IB education in Britain today. Whether your child is drawn to the Diploma Programme or you’re seeking a more holistic, internationally focused pathway, our guide highlights some of the best options across the country.
Halcyon London International School | London
Halcyon is a leading International Baccalaureate school for students aged 11 to 18 – the only not-for-profit IB school in London. Our mission is to provide an exceptional education that draws out the unique potential of each student. At Halcyon, enquiring minds flourish when paired with our innovative approach to the IB curriculum. We believe that setting students up for success lies not only in the academic disciplines but in the development of the holistic learner – with focus on approaches to learning and social emotional literacy. (also shown in main image).
St George’s School Windsor Castle | Windsor
St George’s School Windsor Castle is an award-winning day and boarding school for children aged 3-13, offering extensive facilities in a truly iconic setting at the foot of Windsor Castle.
The first standalone prep school in the UK to be authorised as an IB World School, St George’s prides itself on combining a pioneering, world class International Baccalaureate curriculum, with exciting opportunities to collaborate across the globe through Round Square and a school-wide approach which prioritises mental wellbeing, to nurture children to be kind, resilient, inquisitive, internationally-minded and Real World Ready.
“The best decision we ever made,” said one parent.
Eastwood Global | Online
Eastwood Global are the leader in innovative online education. Based in Switzerland, Eastwood Global is one of only seven schools offering the fully online International Baccalaureate (IB) Diploma Programme. They provide accredited online schooling for Grades 6–12, with pathways to the IB Diploma or an American High School Diploma. Their diverse community includes student athletes and remote learners from over 35 countries. Offering more IBDP subjects than any other online school, their programs are rooted in Academic Excellence, Freedom, Empowerment, Entrepreneurial Spirit, and Global Community, preparing students for top universities and future career success worldwide.
Eastwood Montreux | Lake Geneva
Eastwood Montreux is a next-generation international boarding school on the shores of Lake Geneva. Students pursue the IB or American Diploma through Eastwood Global, whose learners achieve an average IB score of 38.9, ranking among the world’s top 20 IB schools. Afternoons are dedicated to IMPACT, a programme built around six strands (Imagination, Movement, Planet, Action, Character, Technologies) that turn ideas into action through mentorship, entrepreneurship and real-world projects. In one of the world’s safest and most inspiring settings, students ski, sail and explore the Alps while building ventures that matter. Graduates leave with a Legacy Project and an Impact Score, providing clear evidence of growth, purpose and impact.
eastwoodmontreux.ch
Rugby School | Warwickshire
Rugby School has offered the International Baccalaureate (IB) Diploma Programme as an alternative to A levels since 2021; the school recognised its alignment with Rugby’s ethos of holistic education and global citizenship. As an IB World School, Rugby nurtures inquiry, resilience, and reflection through its own distinctive learner profile. The curriculum spans a broad range of subjects and emphasises Theory of Knowledge, Creativity, Activity, Service (CAS), and the Extended Essay. CAS was already embedded in Rugby’s wider curriculum prior to the IB’s introduction, ensuring that students were well-prepared from the outset.
Bromsgrove School | Worcestershire
Bromsgrove School is proud to offer the International Baccalaureate Diploma, recognising that the IB’s values—academic breadth, intellectual curiosity, intercultural understanding, and independent inquiry—align closely with its own educational ethos. Committed to supporting every IB student through expert subject teaching, dedicated pastoral care, and personalised academic guidance, the school’s success in IB alumni is a testament not only to the strength of the school’s programme, but also to the values of diligence, curiosity and ambition that the IB so effectively nurtures.
Bromsgrove’s IB results in 2025 put the School in the top 10 schools globally and at number 4 in the UK. The cohort of 53 students achieved an average score of 39.81 with five students gaining the perfect score of 45 points.
King’s InterHigh | Online
Discover a new way to learn with King’s InterHigh’s pioneering fully online International Baccalaureate (IB) Diploma Programme. As the first of its kind, the online IB Diploma offers a globally accessible education that empowers students to excel. With 20 years of online expertise, our UK and internationally qualified teachers deliver high-quality, interactive instruction across a diverse range of subjects. Our purpose-built online model leverages cutting-edge technology, such as VR, to enhance learning experiences and outcomes. Join a vibrant, inclusive global community that supports every student’s needs, preparing them to achieve their individual goals. Get in touch today to start your journey towards a future-ready education.
Ardingly College | West Sussex
Ardingly College has offered the International Baccalaureate for 20+ years. With an average score of 40.1, the College is the top ranked boarding school for the IB in the UK.
Situated in a beautiful 240 acre campus in West Sussex, the College is only 45 minutes by train to London and easily accessible to both Gatwick and Heathrow.At Ardingly, every student is known and valued as an individual. They have 150+ co-curricular opportunities on offer, and their award-winning Enterprise & Employability programme equips students with the employability and entrepreneurial skills they will need to thrive in a changing world.
Atelier 21 Future School | Crawley
Atelier 21 Future School offers an innovative and affordable independent education for four to sixteen year olds that redefines what school can be. Rooted in creativity, curiosity and purpose, learning begins through Playoneering in the Primary School before evolving into the globally respected International Baccalaureate Middle Years Programme in the Upper School. Replacing GCSEs with inquiry driven, interdisciplinary study, the MYP empowers young people to think critically, act compassionately and lead with confidence. Through real world projects in science, art, enterprise and ethics, learners connect ideas to action. Relevant, meaningful and joyful, Atelier 21 nurtures thinkers and changemakers ready to shape the future.
The International School of London | London
The International School of London welcomes students aged 3–18 into a warm, diverse community built on the International Baccalaureate (IB) curriculum. From the early years to the IB Diploma, our programmes prepare students for university and for life beyond education, with an emphasis on wellbeing and supporting students as they move through the school. ISL graduates are resourceful, resilient, and globally minded, with a love of learning that lasts a lifetime. Our unique Home Language Programme, offering 24 languages, helps students maintain their cultural connections while enriching our vibrant, international environment.
Sidcot School | Bristol
Sidcot School is a co-educational Independent Day and Boarding School for ages 3 to 18, near Bristol. Guided by Quaker values, Sidcot provides a holistic education empowering students to thrive personally and academically.
Alongside A Level and BTEC courses, Sidcot offers a strong IB provision featuring small, international classes and highly individualised support, ensuring students achieve their best results. Graduates consistently attend leading global universities, pursuing diverse courses from Fashion to Medicine, embodying the school motto: “Live Adventurously.”
For students aspiring to exceptional outcomes, Sidcot provides the ideal environment to achieve your potential and prepare for a life of impact.
Taunton School | Somerset
Taunton School is an independent day and boarding school in Somerset for children aged 0-18. The School has a vibrant on-site Sixth Form with 250+ students offering four pathways to higher education, including the ever-popular International Baccalaureate, plus more than 100 co-curricular clubs and activities. It has been an IB World School since 2008 and is one of only a handful in the South West. In July 2025, the School celebrated an average score of 33.3, above the global average of 30. Each year Taunton School’s IB students transition to UK and international universities to study a wide variety of courses.
Ryde School | Isle of Wight
Located on the Isle of Wight, Ryde School is a co-educational day and boarding school, easily accessible from the mainland and offers the IBDP and IBCP alongside A Levels in their Sixth Form.
In 2025, students achieved an impressive average score of 35 points, helping them secure places across an excellent range of universities in the UK and beyond.
Running alongside the academic life is a full co-curricular programme, of which, their exceptional sailing academy is a key part. Sailing is fully integrated into the curriculum ensuring students can access all the opportunities both Ryde School and the solent offer.
St Clare’s | Oxford
St Clare’s, Oxford offers a unique environment where students enjoy an extraordinary international education shaped by over 70 years of experience. As England’s longest-established IB World School and Sixth Form specialists, the college inspires students from more than 50 countries.
The school’s reputation for excellence is built on high expectations, academic challenge, and personalised support, with 90% of students exceeding the global IB average. Its IB programmes provide unmatched expertise and a truly global perspective.
The campus’s university-style setting encourages self-reliance, ambition and personal growth. With exceptional university and careers support, 95% of students go on to their first-choice university, leaving with confidence, independence, and a global outlook that lasts a lifetime.
St Leonards | St Andrews
Set in the historic university town of St Andrews, St Leonards blends a spirit of discovery with a strong sense of community. One of only two UK schools to offer all four IB programmes, pupils follow a complete International Baccalaureate pathway from age 4 to 18. Learning is inquiry-led and globally minded, yet grounded in the school’s Scottish heritage and coastal setting. Creative arts, sport, and over fifty co-curricular pursuits enrich each day, while boarding and day pupils alike develop confidence, curiosity, and compassion. St Leonards prepares its learners Ad Vitam — not just for exams, but for life.
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