The question “what is the International Baccalaureate?” is one we often hear from families visiting The English Montessori School (TEMS) exploring educational options for their children—particularly those seeking a globally recognised and holistic approach to learning.

The International Baccalaureate (IB), and more specifically the International Baccalaureate Diploma Programme (IBDP), offers students aged 16 to 18 an academically rigorous and balanced education that prepares them not just for university, but for life beyond the classroom.

At TEMS, our new IBDP offer at our Nexus Navigator campus is seamlessly integrated into a broader educational philosophy rooted in Montessori values and a commitment to nurturing caring, creative, and independent learners. This makes TEMS an outstanding choice for families seeking a supportive yet challenging international education.

So, what is the IBDP?

The International Baccalaureate Diploma Programme (IBDP) is a two-year programme widely respected by universities around the world. It offers a broad and balanced curriculum, allowing students to study six subjects from different disciplines—keeping options open and encouraging interdisciplinary thinking. This contrasts with other systems – also on offer at TEMS such as A Levels and the Spanish Bachillerato – that require early specialisation.

Subjects fall into six categories:

  • Language and Literature,
  • Language Acquisition,
  • Individuals and Societies,
  • Sciences,
  • Mathematics,
  • The Arts.

This ensures students develop a wide range of academic and practical skills, enabling them to become well-rounded individuals.

But what is the IBDP beyond just subjects? What sets it apart is its Core—three essential components that lie at the heart of the IB philosophy:

  • Theory of Knowledge (TOK),
  • Creativity, Activity, Service (CAS),
  • Extended Essay (EE).

Developing independent thinkers through the core

At TEMS, we believe that the IB’s Core perfectly aligns with the Montessori foundation students have built during their earlier years. Both approaches value curiosity, autonomy, and self-reflection.

Theory of Knowledge (TOK) challenges students to examine how we know what we claim to know. Instead of memorising facts, students engage in philosophical inquiry—exploring questions such as “What counts as evidence?” or “How does language influence our thinking?” This critical approach to knowledge mirrors the Montessori method, where students are encouraged to explore ideas independently and from multiple perspectives.

The Extended Essay (EE) requires students to conduct independent research and write a 4,000-word academic paper on a topic of personal interest. Supported by a supervisor, students develop advanced research, writing, and referencing skills that are invaluable for university.

Creativity, Activity, Service (CAS) invites students to go beyond academics and contribute meaningfully to their communities. Students might organise fundraising initiatives, participate in environmental projects, or create original artistic work. Through CAS, our students develop empathy, collaboration, and global awareness—key values in both IB and Montessori philosophies.

Why choose the IB at TEMS?

Choosing where to study the IBDP is just as important as understanding what is the International Baccalaureate. TEMS students receive all the benefits of the IB in an environment that truly supports their individual growth.

From pre-Nursery through to Year 13, our teaching is grounded in the Montessori philosophy of student-centred learning, which promotes independence, intrinsic motivation, and a love of learning from an early age.

This makes the transition into the IBDP natural and empowering. The combination of Montessori methods and the IB framework encourages students to take ownership of their education, ask meaningful questions, and develop real-world skills.

Preparing for University—and beyond

One of the most common reasons families choose the IB is its reputation for preparing students for higher education. Universities around the globe recognise IB graduates as critical thinkers and effective communicators with strong research and time management skills.

TEMS graduates consistently achieve academic excellence and go on to attend top universities in the UK, Spain, the rest of Europe, and the US. They do so not just with academic knowledge, but with the confidence, independence, and global outlook that the IB and Montessori approaches instil.

If you’re wondering what is the International Baccalaureate, the answer is far more than just a school curriculum. It’s a philosophy—a way of learning and thinking that equips students with the tools they need to thrive in an ever-changing world.

At TEMS, the IBDP is more than a qualification. It’s an experience shaped by Montessori principles, dedicated educators, and a nurturing community. We help students grow into independent, creative, and caring individuals who are ready to make their mark—wherever life takes them.