The IB Diploma Programme

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1. The IBDP Structure: The 6+3 Model

The IB Diploma Programme (IBDP) is a two-year curriculum, usually taken in Grades 11 and 12, with a full score of 45 points. It is built from six academic subject groups and three core components.

The Six Subject Groups

  1. First language (usually Chinese Literature)

    This is the student’s native or most fluent language, intended to develop precision in expression and strength in literary appreciation. In practice, this often means Chinese Literature or the literature course of another national language.

  2. Second language (usually English)

    This is the student’s second language, which may be English or another language such as Spanish or French. The goal is to strengthen communication ability and cultural understanding.

  3. Individuals and societies (economics, history, psychology, and so on)

    This group covers social sciences and humanities, including subjects such as economics, history, psychology, and philosophy. Its purpose is to help students understand social, cultural, and economic structures.

  4. Experimental sciences (physics, chemistry, biology, computer science, and so on)

    This group focuses on scientific inquiry. Students may choose subjects such as physics, chemistry, biology, or computer science. Each subject includes both theory and practical work.

  5. Mathematics (AA / AI)

    There are two main pathways:

    • AA (Analysis and Approaches): suited to students with stronger mathematical ability, with an emphasis on theory, proof, and complex problem solving.
    • AI (Applications and Interpretation): suited to students more interested in practical applications of mathematics, such as statistics and modelling.

  6. The arts, or one extra subject from Group 3 or Group 4

    Students may choose an arts subject such as visual arts, music, or theatre. If they do not choose an arts subject, they may instead take an additional subject from another group, most commonly from Group 3 or Group 4.

The Three Core Components

These three core components account for 3 points in total. If a student does not meet the required standard in them, the IB diploma cannot be awarded.

  1. TOK (Theory of Knowledge)

    TOK is the philosophical component of the IB. It asks students to think about how knowledge is acquired, where it comes from, and what its limitations are, and to demonstrate critical thinking through discussion and writing.

  2. EE (Extended Essay)

    Students are required to write an independent research essay of 4,000 words. The EE offers a chance to explore an academic topic in depth, while building research ability, critical thinking, and academic writing skills.

  3. CAS (Creativity, Activity, Service)

    CAS requires students to participate in a range of extracurricular activities, including creative work, physical activity, and service. CAS does not carry points, but it is still a required part of completing the IBDP, designed to support all-round development and a sense of responsibility and social participation.

2. How the Scoring Works: 45 Points Is the Maximum

Formula: (6 subjects × 7 points) + (up to 3 core points) = 45 points

  • The maximum for a single subject is 7 points

    • 7: Excellent (in practice this is often reached around 70% to 80% raw marks, depending on the grade boundaries)

    • 6: Very Good

    • 5: Good

    • 4: Satisfactory (the passing line)

    • Below passing: 3 and below in HL subjects is usually a serious warning sign.

  • What different total score bands usually imply

    • 40+ points: top-tier academic performance. Typical targets include Oxbridge and the Ivy League.

    • 36-39 points: strong performance. Typical targets include the rest of the UK G5, such as Imperial and UCL, as well as many US Top 30 universities.

    • 30-35 points: respectable mid-range performance. Typical destinations include UK red-brick universities, Australia’s Group of Eight, and many US Top 50 universities.

    • 24 points: the rough minimum threshold for receiving the diploma, assuming the other passing conditions are also met.

3. Typical University Destinations

The IB is highly recognized worldwide, but the way it is used varies a lot by country.

  • United Kingdom: this is one of the strongest and also most rigid systems for IB applicants. Conditional offers usually specify exact score requirements.

    • For example, Physics at Imperial College might require an overall score of 39, together with a 7 in HL Physics and a 7 in HL Mathematics.

  • United States: admissions are more holistic. A strong IB score can also translate into university credit, which may reduce tuition costs.

    • Even though US admissions are not based only on scores, applicants to Ivy League universities usually need around 40 to 42 points to be genuinely competitive.

  • Hong Kong / Singapore: admissions are also highly score-driven, and many popular programmes at HKU, NUS, and similar universities usually expect 40+.