What Is the IB Curriculum and How Does It Work?

The IB (International Baccalaureate) curriculum is a framework of four programmes that span ages 3 to 19, built around a learner profile of ten attributes and assessed largely through internal and external tasks rather than a single set of exams. It suits families who want a consistent, inquiry-driven structure across a child's whole school career, and it is offered at schools such as the International School of Beijing (ISB), which runs the IB from Early Years through Grade 12 alongside a Chinese language program.

The four IB programmes

Each programme has its own age range, structure, and assessment style.

The programmes are designed as a continuum, so a student can move from one to the next without changing educational philosophy. Not every IB school offers all four — some run only the DP, for example. ISB's stated offering covers Early Years through Grade 12, which maps onto the full sequence.

What the learner profile means in practice

The IB learner profile names ten attributes — inquirers, knowledgeable, thinkers, communicators, principled, open-minded, caring, risk-takers, balanced, and reflective. These are not a grading scheme. They function as the stated aims that shape how teachers design units and how students are expected to engage: asking questions rather than only receiving answers, connecting subjects to real contexts, and reflecting on their own learning.

For a student, this shows up as more discussion, project work, and self-assessment than in a curriculum built mainly around textbook coverage and terminal exams.

How the DP core fits together

The Diploma Programme is the most widely known part of the IB, and its structure is the clearest illustration of how the pieces connect:

• Six subject groups — students typically study one subject from each, with some choice about levels (Higher Level and Standard Level).
• Theory of Knowledge (TOK) — a course on how we know what we claim to know, assessed through an exhibition and an essay.
• Extended Essay (EE) — an independent research paper of up to 4,000 words on a topic the student chooses.
• Creativity, Activity, Service (CAS) — an ongoing programme of experiential learning outside academic subjects.

TOK, EE, and CAS are compulsory for DP candidates and sit alongside the subject grades rather than replacing them. Assessment combines external examinations, marked by the IB, with internal assessments marked by the school and moderated externally.

How the IB differs from other curricula

Two differences matter most when comparing options:

Structure. The IB specifies a programme framework — themes, subject groups, and a core — rather than a national syllabus. A school teaching the IB has less freedom to drop the core components, but more freedom in how it teaches each unit.

Assessment style. The IB mixes coursework, projects, oral work, and exams. Many national systems weight a final exam set far more heavily. That difference affects daily workload: an IB student often carries several ongoing assessed tasks at once rather than concentrating effort into one exam period.

What being an IB student involves

Expectations vary by programme, but the common threads are:

• Sustained writing and research — from PYP inquiries through the MYP personal project to the DP extended essay.
• Managing parallel deadlines — internal assessments, CAS reflections, and TOK work run alongside regular subject study.
• Active participation — discussion, group work, and presentations are part of how learning is assessed, not extras.
• Self-direction — choosing research topics, service activities, and in the DP, some subject combinations.

The workload is real but distributed. Students who plan across a term rather than a week tend to handle it more comfortably than those who treat each task as isolated.

Choosing an IB school: what to check

If you are evaluating a specific school, these are the questions that actually distinguish one IB provider from another:

1. Which programmes are authorised? A school may offer the DP only, or the full continuum from PYP onward.
2. How is language supported? ISB, for instance, pairs the IB with a Chinese language program — relevant if you want language learning built into the timetable rather than added on.
3. How are DP subjects staffed? The range of Higher Level subjects offered varies between schools and affects university pathways.
4. What does the assessment calendar look like? Ask how internal assessments are spread across the two DP years.

The IB framework is consistent worldwide, but the experience depends heavily on the individual school's staffing, language provision, and how it sequences the programmes. Checking those four points tells you more than the IB label alone.