The Cambridge International Curriculum is one of the most widely used international education systems in the world. Known for strong academic structure, subject depth, and clear exam-based assessment — unlike the IB, which is a continuous programme from age 3 to 18, Cambridge is a flexible system: schools choose which stages to implement and how to combine them.

The four stages of Cambridge

🧒
Cambridge Primary
Ages 5–11 · Years 1–6
Foundational skills in literacy, numeracy, and science. Strong emphasis on structured academic basics — reading, writing, and mathematics — with optional external assessments.
→ Building a solid academic foundation
🧑‍🎓
Cambridge Lower Secondary
Ages 11–14 · Years 7–9
Structured subject learning across core disciplines. This stage prepares students for the demands of IGCSE — building subject knowledge and exam readiness.
→ Preparation for the first major exam milestone
📚
IGCSE First major exams
Ages 14–16 · Years 10–11
Students typically take 7–9 subjects — a broad academic foundation across core, academic, and optional areas. Results matter for A-Level selection and some university applications. The goal at this stage is breadth, not deep specialisation.
→ Broad foundation across many subjects
🎓
A-Level University entry qualification
Ages 16–18 · Years 12–13
Students choose 3–4 subjects to study in depth. This is the stage universities evaluate most closely — both the grades and the subject choices matter. The wrong subject combination can close doors regardless of grades.
→ Deep specialisation — the primary university entry qualification

What subjects do students take?

At IGCSE, students build breadth across many subjects. At A-Level, they narrow to 3–4 areas of focus. Subject choice at A-Level is one of the most consequential decisions a student makes — universities look closely at whether subjects align with the intended degree.

📚 Typical IGCSE subjects (7–9)
Core
  • English (First or Second Language)
  • Mathematics
Academic
  • Biology · Chemistry · Physics
  • Geography or History
Optional
  • Economics · Business Studies
  • Computer Science · Art
  • French · Spanish · Portuguese
🎓 Typical A-Level combinations (3–4)
Economics / Business
  • Mathematics · Economics · Business
Medicine
  • Biology · Chemistry · Mathematics
Engineering
  • Mathematics · Physics · Computer Science
Subject choice matters as much as grades. UK universities care deeply about which A-Level subjects a student has chosen, not just their grades. Applying for Medicine without Biology A-Level, for example, will typically result in rejection regardless of other results.

How Cambridge exams and grading work

Cambridge is fundamentally exam-based. IGCSE exams are taken at the end of Year 11; A-Level exams at the end of Year 13. Coursework exists in some subjects but exams carry most of the academic weight.

Cambridge grading system
📚 IGCSE grades (A*–G)
A*
Outstanding
A
Excellent
B
Good
C
Satisfactory
D–G
Below average
🎓 A-Level grades (A*–E)
A*
Exceptional
A
Excellent
B
Good
C
Satisfactory
D–E
Pass

What do universities expect?

Top UK universities (Oxford, Cambridge, Imperial) typically require A*AA or AAA — and often specify which subjects. US universities also accept A-Levels, usually combined with SAT scores and extracurricular profile. Requirements vary significantly by course and institution — always check entry requirements for your specific target universities.

Can Cambridge exams be taken independently?

One practical advantage of Cambridge over IB: in many cases, students can register as private candidates at approved exam centres — meaning exams can be taken without attending a Cambridge school. However, not all centres accept private candidates, not all subjects are available this way, and preparation must be done independently. Worth checking if your child is switching systems or in an unusual situation.

How Cambridge differs from IB

🇬🇧 Cambridge
Subject-based and exam-driven
Focus on knowledge and performance
Deep specialisation in 3–4 subjects
Less coursework, more exam weight
More flexibility in subject choice
→ Cambridge = depth
🌍 IB
Programme-based and holistic
Focus on analysis and thinking
6 subjects + EE + TOK + CAS
Exams + coursework + internal assessments
Fixed programme structure
→ IB = breadth
Many Cambridge schools in Portugal also offer the IB Diploma in Years 12–13 as an alternative to A-Levels. So choosing a Cambridge school doesn't close the door on IB for the final two years. Full IB vs Cambridge comparison →

How to evaluate a Cambridge school

Being a Cambridge-authorised school is a starting point, not a quality guarantee. Here's what actually matters:

1
A-Level results
Look at the percentage of A* and A grades, and whether results are consistent year on year. Strong schools publish this openly. Be cautious of schools that share averages only without grade distributions.
2
Subject availability at A-Level
Can the school offer the specific A-Level subjects your child needs for their target programme? Smaller schools may have limited options — especially for Further Mathematics, specific sciences, or languages.
3
University destinations
Where do graduates actually go? A school's university destinations list is one of the most honest indicators of its academic level. Look for representation from your target universities, not just well-known names.
4
Teaching quality and exam experience
Cambridge exams reward exam technique as much as knowledge. Experienced subject teachers who have taught A-Level for many years make a significant difference — especially in the final year.
5
University guidance
Strong Cambridge schools provide dedicated university counselling — UCAS application support, personal statement guidance, and preparation for UK interviews. This should start in Year 12, not the final term of Year 13.