IB Diploma Explained: Scores, Subjects, and University Entry for Expat Families
The International Baccalaureate Diploma Programme (IBDP) is offered in more than 5,900 schools across 163 countries, making it the most internationally portable upper-secondary qualification available. For expat families who have moved — or expect to move — between countries during a child's secondary education, it offers a consistency of standard that neither national curricula nor locally-administered qualifications can match.
This guide explains in plain terms how the Diploma works, how it is scored, what universities expect, and how to use knowledge of the IB system to make better school and relocation decisions.
The IB Continuum: PYP, MYP, and Diploma
The International Baccalaureate Organisation (IBO) offers four programmes across the full school age range:
- Primary Years Programme (PYP): Ages 3–12. Inquiry-based, no external examinations. Widely available and well suited to internationally-mobile younger children.
- Middle Years Programme (MYP): Ages 11–16. Eight subject groups, mix of internal and external assessment. Designed to lead into the Diploma Programme but is not a formal prerequisite.
- Diploma Programme (DP): Ages 16–19 (Years 12–13). The externally examined qualification that universities recognise.
- Career-related Programme (CP): Ages 16–19. Combines IB Diploma courses with a career-related study pathway. Less common in international school settings.
This guide focuses on the Diploma Programme, which is the qualification relevant to university entry. The PYP and MYP matter insofar as they prepare students for the DP, but neither yields a globally traded qualification in the same sense.
How the Diploma Programme Is Structured
Students in the DP study six subjects, chosen from six subject groups:
| Group | Examples |
|---|---|
| Group 1 — Language and Literature | English A, French A, Arabic A |
| Group 2 — Language Acquisition | Spanish B, French B, Mandarin ab initio |
| Group 3 — Individuals and Societies | History, Economics, Geography, Psychology |
| Group 4 — Sciences | Biology, Chemistry, Physics, Environmental Systems |
| Group 5 — Mathematics | Maths: Analysis and Approaches; Maths: Applications and Interpretation |
| Group 6 — Arts (or a substitute from Groups 1–4) | Visual Arts, Music, Theatre; or a second science or humanities |
Students must take one subject from each group. Three subjects are taken at Higher Level (HL) and three at Standard Level (SL). HL subjects typically require 240 teaching hours over two years; SL subjects around 150 hours.
How IB Points Are Scored
Each of the six subjects is marked on a scale of 1 (lowest) to 7 (highest). The maximum from six subjects is therefore 42 points.
The three core components — Theory of Knowledge (TOK), Extended Essay (EE), and Creativity, Activity, Service (CAS) — contribute additional points:
- TOK is graded A–E; EE is also graded A–E.
- Together they can add a maximum of 3 bonus points to the final total, via a combined matrix. For example: TOK grade A + EE grade A = 3 bonus points; TOK grade B + EE grade C = 2 bonus points; a grade D in both together scores 0 bonus points.
- CAS (Creativity, Activity, Service) is compulsory and must be completed satisfactorily, but it does not contribute to the numerical score.
Maximum total: 45 points (42 subject points + 3 core bonus points).
Minimum to earn the Diploma: 24 points, subject to conditions including no grade 1 in any subject, and no E grade in both TOK and EE simultaneously.
Global Score Context (May 2025 Session)
- Global average DP score: 30.58 points
- Global pass rate: 81.26%
- Over 202,000 students sat examinations worldwide
A score of 30 is therefore around the global average. A score of 38 or above places a student in roughly the top 10–15% globally and is the threshold for most competitive UK university offers. A score of 42 or above is exceptional.
Higher Level vs Standard Level: What Is the Difference?
The HL/SL distinction is significant both in teaching hours and in assessment difficulty. HL syllabuses cover additional content and include more demanding assessments. Universities care about HL results; SL results are noted but carry less weight in competitive offers.
A student wishing to study Medicine at a UK university, for example, will be expected to have Chemistry and Biology at HL (and in many cases, a third relevant subject such as Mathematics or Physics at HL). A student targeting an economics degree will typically need Mathematics at HL.
Common HL combinations:
| Intended Degree | Typical HL Subjects |
|---|---|
| Medicine / Biomedical | Chemistry, Biology + one of Physics / Maths |
| Engineering | Physics, Mathematics (Analysis & Approaches) + one science |
| Economics / Business | Mathematics (Analysis & Approaches), Economics + one further |
| Law / Humanities | History or Geography, English A/B, one further humanities or language |
| Architecture | Visual Arts or Mathematics, Physics + one further |
The Core Components in Detail
Theory of Knowledge (TOK)
TOK is a compulsory philosophy-of-knowledge course unique to the IB. Students explore how we know what we know across different disciplines. It is assessed through an essay (external) and a presentation (internal). TOK rewards critical and reflective thinking; students who engage with it genuinely find it the most distinctive part of the IB experience.
Extended Essay (EE)
The EE is an independently researched and written essay of up to 4,000 words on a subject of the student's choice, supervised by a school mentor. It is the closest an 18-year-old comes to undergraduate research before university. UK universities and US universities alike regard the EE as evidence of independent academic capacity. Students considering Oxbridge should choose an EE topic closely related to their intended course of study.
Creativity, Activity, Service (CAS)
CAS requires students to engage in experiential learning outside the classroom — creative projects, physical activity, and community service. It is not graded numerically but must be completed to a satisfactory standard; failure to complete CAS can result in the Diploma being withheld even if the academic score is sufficient.
University Entry: UK, US, and International
UK Universities
UK universities set conditional offers in IB points. The table below gives approximate typical offers as of 2026; always verify with each institution directly.
| University / Course Type | Typical IB Offer | A-Level Equivalent |
|---|---|---|
| Oxford, Cambridge (competitive) | 40–42 with 7,7,6 HL | AAA |
| Russell Group (medicine/law/economics) | 38–40 with 6,6,6 HL | A*AA |
| Russell Group (standard competitive) | 35–38 with 6,6,5 HL | AAA–AAB |
| Good universities (non-Russell Group) | 30–34 with 5,5,5 HL | ABB–BBB |
| Foundation / access pathways | 24–28 | CCC and below |
HL subject requirements are non-negotiable. An offer of "38 points with Chemistry HL at grade 6" means the university will not waive the Chemistry HL requirement even if the overall score is 39.
US Universities
US selective universities view the IB Diploma very favourably. The breadth requirement (all six groups including a science, mathematics, and two languages) mirrors the US liberal arts ideal. HL scores of 6 or 7 frequently earn Advanced Placement credit, allowing students to skip first-year introductory courses in Biology, Chemistry, or Calculus. There is no direct GPA conversion for IB scores, but admissions offices are experienced in contextualising them.
Australia, Canada, and Singapore
All three have published IB equivalency tables. Australian universities generally regard 30–32 points as a competitive offer for most courses; top universities (ANU, Melbourne, Sydney) typically require 38+. Canadian universities similarly range from approximately 28 (standard) to 38+ (competitive). Singapore's NUS and NTU set specific IB requirements by faculty, typically 38–42 for medicine and engineering.
IB Results Release and Planning Your School Choice
The May examination session results are released in early July. For families choosing schools at the start of the DP (Year 12), the key planning questions are:
- Is the school authorised by the IBO? Only authorised IB World Schools can offer the Diploma Programme. The IBO maintains a searchable school finder at ibo.org.
- What HL subjects does the school offer? Not every IB school offers every HL subject. If your child intends to study Medicine, confirm that Chemistry HL and Biology HL are both available.
- What is the school's average score? The global average is 30.58. A school averaging 33–35 is performing well; schools averaging 38+ are very strong. Treat published averages with some caution — cohort size and selection policy affect the number.
- Is the school running the November or May session? Most international schools use May. Schools in the southern hemisphere often use November. This affects when results arrive relative to UK university Clearing.
How Global Investments Can Help
Families selecting an IB school are often choosing a country and property at the same time. The quality and availability of IB schools varies significantly from one destination to the next — from the established IB communities in cities such as Dubai and Bangkok to the smaller but growing provision in places like Cyprus and Greece.
Global Investments works with internationally mobile families worldwide and can help you understand what IB education looks like in each location, so that your property search and school search are aligned. For families whose relocation involves a residency or visa change, visit our residency and citizenship page.
See also our curriculum overview at British vs IB vs American: which is right for your expat child? and our guide to IGCSE for expat families. For families specifically in the Gulf, our IB schools in Dubai guide covers local options.
This guide is for general information only. IB scoring rules, university offer levels, and school authorisation status change regularly — verify with the IBO and individual universities before making decisions. Property values can fall as well as rise.
Frequently asked questions
What is the minimum IB score to pass the Diploma?
The minimum to be awarded the IB Diploma is 24 points overall, with no grade 1 in any subject, no more than two grade 2s, and no failing conditions in the core (a grade E in both Theory of Knowledge and the Extended Essay together is a failing condition). There are additional requirements around the combination of Higher Level and Standard Level grades. A score of 24 is a pass, but it is not competitive for selective university entry — most Russell Group and US Ivy League offers are set well above this threshold.
When do IB Diploma results come out?
Results for the May examination session are released in early July — typically the first or second week of July. Students sit examinations in April and May; results are released approximately six to eight weeks later. There is also a November examination session (primarily taken in the southern hemisphere), with results released in early January. Most international schools follow the May session.
How do UK universities translate IB points into offers?
Each UK university sets its own IB offer, usually alongside an A-Level equivalent. Typical Russell Group offers range from 35 to 38 points (with specific HL subject requirements) for standard degree courses. Highly competitive courses — medicine, law, economics at LSE, or any course at Oxford or Cambridge — typically require 38–42 points with 7,7,6 or 7,7,7 at HL. UCAS also publishes a tariff table converting IB scores to UCAS points, which universities may use as a secondary reference.
Is the IB Diploma accepted in the United States?
Yes. US universities, including Ivy League and other highly selective institutions, are very familiar with the IB Diploma and consider it excellent preparation. Many US universities award college credit for Higher Level scores of 6 or 7, potentially allowing students to skip introductory courses. The breadth of the IB — covering sciences, humanities, and mathematics — aligns well with the US liberal arts model. IB students should submit predicted scores (and request that their school certifies them) as part of the Common Application or university portal.
This guide is for general information only and does not constitute financial, legal or tax advice. Rules, fees and regulations change frequently; verify current requirements with a qualified adviser before acting.