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The British International School of Zagreb (BISZ) stands as one of Croatia’s leading international educational institutions, offering a British-style curriculum designed to nurture global citizens. Established in 2013, BISZ provides an academically rigorous and internationally recognised education that follows and is accredited by Cambridge International Education (CIE).
With a strong focus on academic excellence, personal development, and international-mindedness, BISZ prepares students not only for university success but also for meaningful global careers. Among its many strengths, the High School Mathematics Programme plays a vital role in shaping analytical, creative, and future-ready thinkers.

A Global Curriculum Rooted in British Educational Excellence British International School of Zagreb’s high school follows the Cambridge International curriculum, a system that is globally respected for its emphasis on academic depth and flexibility. Students progress through:

Key Stage 4 (Years 10–11), where they prepare for the International General Certificate of Secondary Education (IGCSE) examinations.

Key Stage 5 (Years 12–13), where they undertake AS and A-Level qualifications, widely recognised by universities across the UK, Europe, the United States, and beyond.

We combine traditional academic rigour with modern teaching methods that emphasise problem-solving, communication, and critical thinking — essential attributes for success in higher education and future careers.

British International School of Zagreb - Importance of Mathematics - Video.

📞 Contact us today to learn more about admissions, boarding, and academic opportunities.

🔗 Visit: www.britishschool.hr

📧 Email: info@britishschool.hr

Welcome to BISZ The British International School of Zagreb (BISZ) is a leading international school in Croatia, offering a world-class education based on the British Curriculum. Our mission is to nurture confident, curious, and capable global citizens who are ready to succeed in the world’s best universities and beyond.

At BISZ, we combine academic excellence with a supportive, multicultural environment — empowering students to reach their full potential, both in and out of the classroom.

BISZ - Academic Programme
Our Academic Programme follows the Cambridge International Curriculum, ensuring students receive a rigorous, well-rounded education recognized worldwide. BISZ provides a seamless academic journey designed to inspire intellectual curiosity, creativity, and critical thinking.

Key features include:
📘 Cambridge-accredited curriculum
🎓 Strong focus on academic achievement and university readiness
📘 Small class sizes for personalized learning
📘 Internationally experienced teachers
💬 English as the language of instruction with additional language support

Our students consistently achieve high academic results and progress to top universities across the UK, Europe, and the world.

British International School of Zagreb - Boarding School Life Our Boarding School offers students a safe, comfortable, and inspiring home away from home. Located in Zagreb’s peaceful surroundings, our boarding facilities provide the ideal environment for study, personal growth, and friendship.
Boarding features:

🏡 Modern, secure five star accommodation with 24-hour supervision
📘 Healthy, balanced meals and shared community spaces
📚 Supervised study sessions and academic support
🎯 Extracurricular activities promoting sports, and leadership
🌟 Dedicated pastoral care ensuring student well-being
Boarding at BISZ fosters independence, responsibility, and a sense of belonging — preparing students for both academic and personal success.

Why Choose BISZ?
✅ Cambridge-accredited British education
✅ Outstanding teachers and individualized support
✅ Safe, inclusive, and internationally minded community
✅ Boarding and day school options
✅ Pathways to top global universities


Join Our Community The British International School of Zagreb is more than a school — it’s a place where students are encouraged to dream, discover, and achieve.



British International School of Zagreb - Boarding School Life - Video.



British International School of Zagreb - Welcome - Video.


📞 Contact us today to learn more about admissions, boarding, and academic opportunities.

🔗 Visit: www.britishschool.hr

📧 Email: info@britishschool.hr

Mathematics holds a central position within the BISZ curriculum. It is considered a core subject throughout all educational stages and plays a vital role in developing the analytical, logical, and problem-solving abilities that underpin success in many academic disciplines and professional fields.

Curriculum Structure
The mathematics curriculum at BISZ is designed to follow the British Key Stage system, which provides a progressive structure leading from foundational knowledge to advanced abstract reasoning:

Key Stage 3 (Years 7–9): Students build on basic arithmetic and algebraic understanding from primary education, focusing on number operations, geometry, algebra, probability, and statistics. Emphasis is placed on conceptual understanding, pattern recognition, and developing confidence in handling numbers and equations.

Key Stage 4 (Years 10–11): Students prepare for the Cambridge IGCSE Mathematics examinations. The IGCSE course aims to provide a strong grounding in essential mathematical concepts such as algebra, geometry, trigonometry, statistics, and introductory calculus. Problem-solving and real-world applications are key components, ensuring students not only memorise procedures but also understand how to apply them.

Key Stage 5 (Years 12–13): At the sixth-form level, mathematics becomes an elective subject through AS and A-Level Mathematics. Students who choose this pathway study topics such as pure mathematics, mechanics, and statistics at a much deeper level. The A-Level programme prepares students for university study, particularly in disciplines such as engineering, economics, computer science, and the natural sciences.

In a world driven by innovation and data, mathematics is the foundation for future success. At the British International School of Zagreb (BISZ), we prepare students to think critically, reason logically, and approach problems with creativity and confidence.
For more information visit: www.britishschool.hr

British International School of Zagreb (BISZ) -Mathematics - Video.

It’s spooky time at BISZ! 🎃
We’re brewing up fun, laughter, and a little bit of magic this Halloween!
Trick or teach? 👻
Halloween at the British International School of Zagreb
Spooky, safe, and spectacular — Halloween at BISZ is where creativity, community and curriculum collide!
Every year the British International School of Zagreb lights up with laughter and hands-on learning as students across ages celebrate Halloween in ways that are fun, inclusive and educational.

What to expect
Costume Parade & Photos — Students show off imaginative outfits in year-group parades.
Classroom Activities — Curriculum-linked projects: spooky stories in English, Halloween art and crafts, themed STEAM experiments, and simple history lessons about autumn traditions.
Games & Stations — treasure hunts, “monster math” challenges and craft tables run by teachers and student volunteers.

Why we celebrate
Halloween at BISZ is more than costumes and candy. It’s an opportunity to:

Encourage creative expression and confidence-building.
Foster cross-age interaction through buddy events and collaborative projects.
Integrate learning across subjects (literacy, arts, science and social studies).
Strengthen our international community through shared celebration and school spirit.

#BISZ #HalloweenFun #SpooktacularSchool