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Complete Guide to the IB Diploma Programme

Complete Guide to the IB Diploma Programme

8 min read | Lanterna Team | January 27, 2026

Understand the IB Diploma Programme curriculum, subjects, and core elements (CAS, TOK, EE) with this expert guide. Learn how IB assessments and grading work.

IB Diploma Programme 101: Your Questions, Answered!

What is the IB Diploma Programme? Who are the IB? If you’re looking for the answers to these questions because you’re interested in IB DP1, you’re on the perfect page!

As IB graduates, we know there are loads of myths and fake news about the IB Diploma programme that can confuse (and scare!) students. This internationally recognised programme is challenging, but it’s not as terrifying as some make it out to be. Yes, it’s hard work, but the coursework helps prepare students to transition from school to higher education. Plus, it helps students develop a range of handy skills.

So, the tutors at Lanterna Education are here to unpack what you can expect during the DP1 and give you all the answers so you can make an informed decision about your studies.

Scroll down to learn about the IB, how the DP curriculum works, and how it prepares you for university and life after your studies!

A simple guide to the International Baccalaureate Diploma Programme for students - Lanterna Education

IB DP 101: A Simple Guide to the International Baccalaureate Diploma Programme

1) Who is the International Baccalaureate (IB)?

Originally known as the International Baccalaureate Organisation (IBO), the IB (International Baccalaureate) is a nonprofit organisation that began in 1968 to provide quality educational programmes to students between 3 and 19 years old.

Today, the IB offers globally recognised programmes to help young people around the world prepare for university and build the skills needed to succeed throughout their studies and lives.

2) What is the IB Diploma Programme (IB DP)?

Created for young people aged 16 to 19, the IB Diploma Programme (IB DP) is one of four optional secondary education programmes developed and offered by the International Baccalaureate (IB). The two-year programme (often called DP1 and DP2) has a globally recognised syllabus that allows high school students to progress academically, develop their creative thinking and earn an internationally renowned IB Diploma.

3) How does the IB Diploma Programme benefit students?

Ivy Leagues and the world’s leading universities accept IB Diploma certificates, making the university application process much easier. But the IB’s academically challenging programme doesn’t only show commitment and look great on university admission applications!

The IB syllabus also prepares students for higher education. The programme ensures that students graduating with the IB Diploma have the tools to succeed academically and build rewarding careers. Here are a few of the many benefits the IB Diploma programme offers:

  • It nurtures curiosity, lifelong learning, exploration, ethical and critical thinking and promotes cultural understanding
  • Students gain an excellent breadth and depth of knowledge
  • It helps students grow and excel intellectually, physically, and emotionally
  • Studying at least two languages improves student’s language abilities
  • IBDP students graduate with the tools to build meaningful lives and are future-ready
  • The IB Diploma qualification has international university recognition

4) Can anyone do the IB Diploma?

Yes! The great thing about the IB Diploma is that any student aged 16 to 19 around the world can choose to take the programme. However, only an IB School (or educational institutions with IB approval) can offer their students access to the full IB Diploma Programme and certificate.

5) What are IB Schools?

It may sound complicated, but IB Schools are just educational institutions with the International Baccalaureate’s permission to offer their programmes to its students.

In fact, almost any international school can apply to become an IB School and join a global school community of over 5,000 schools around the world offering the IB curriculum, DP subjects, exams and IB Diploma qualifications.

The International Baccalaureate (IB) Diploma Programme (DP) Curriculum and Subjects Explained - Lanterna Education

IB DP 101: International Baccalaureate (IB) Diploma Programme Curriculum and Subjects Explained

1) How does the International Baccalaureate (IB) curriculum work?

The IB Diploma Programme curricula has six subject groups and three mandatory core elements that Diploma Programme (DP) students must complete over two years to earn their International Baccalaureate (IB) Diploma certificate.

It sounds like a lot, and the programme is demanding. But its structure also allows flexibility, and each of the required components and six subjects are excellent preparation for future study at universities and other higher education institutions.

2) What courses do the IB Diploma Programme offer?

Each of the subject groups in the International Baccalaureate (IB) Diploma programme offers different courses. However, it’s important to remember that some countries and IB Schools may set mandatory subjects and different languages for students based on the national curriculum and available resources.

The International Baccalaureate (IB) Diploma programme offers the following subject groups:

  • Language and Literature
  • Language Acquisition (Second language)
  • Individuals and Societies (Social Sciences)
  • Experimental Sciences (Chemistry, Physics, Biology or Environmental systems)
  • Mathematics (Analysis and approaches or Applications and interpretation)
  • The Arts (Visual arts, Dance, Music, Film or Theatre)

How many subjects must IB students choose?

IB DP students must pick one subject from each of the subject groups, three of which must be Higher level (HL) and three must be Standard level (SL).

The IB Diploma Programme (DP) requirements include:

  • Two languages (a first language and second language)
  • Experimental sciences
  • Mathematics
  • Social sciences

What are IB HL and SL subjects?

Standard-level subjects require 150 hours of teaching, while Higher level subjects
need 240 hours of study. IB Higher level (HL) and Standard level (SL) courses also have different scopes but use the same grade descriptors.

Both subject levels require students to learn and display their understanding of a topic; the only difference is that Higher level (HL) subjects expect students to show a greater depth of knowledge, understanding and range of skills.

Can IB Diploma Programme students swap one course for another?

It all depends on the course! Languages, Sciences, Mathematics and Social Sciences are mandatory for all students, but students may take additional courses instead of studying the arts.

So you can select an extra Science, Language or Individuals and societies to replace the arts and meet the IB’s of six subject requirements.

Unpack the IB DP Core Elements with this easy-to-understand IB DP guide for students - Lanterna Education

IB DP 101: Unpacking the IB DP Core Elements

What are the IB Diploma Core Elements?

The IB Diploma programme’s three core elements aim to broaden student’s education. Each project provides opportunities and challenges where students can apply their skills and knowledge.

The three DP core elements in the Diploma Programme are:

1) CAS

What does IB CAS mean?

CAS stands for Creativity, Activity Service. CAS projects combine a range of activities with academic study to develop a student’s personal and social skill sets and creative thinking. Creativity, Activity and Service projects are flexible and focus on students learning new skills through different activities. For example, Creativity can include learning photography or playing a new instrument; Activity can be a physical activity like learning to cook, and Service CAS can be acts of community service or volunteer work.

2) TOK

What is IB TOK?

TOK means Theory of Knowledge, and these projects focus on developing critical thinking skills and learning across a student’s chosen theory subjects. Theory of Knowledge assignments challenge DP students to explore and reflect on the nature of knowledge and make students reflect on how they know something.

3) EE

What does EE stand for in the IB?

EE is an extended essay that requires DP students to formulate a research question, conduct research to support an argument and submit a 4000-word document at the end of the project. By allowing students to do independent research on a topic of personal interest, the IB extended essay project provides opportunities for students to improve communication, develop evidence-based arguments and explore their interests.

Learn how the International Baccalaureate (IB) marks Diploma Programme (DP) students - Lanterna Education

IB DP 101: Understanding the IB (DP) Assessments and Exams

1) How do the International Baccalaureate mark IB programme students?

The International Baccalaureate (IB) calculates grades and results based on a set minimum standard of performance for Theory of Knowledge projects, Extended Essays and Creativity, Activity Service projects.

The IB gives students goals for their coursework, and they use student work as evidence of their progress and achievements over the two-year Diploma programme.

The IB marking criteria for students includes:

Basic skills:

  • Learning and recalling knowledge
  • Understanding key concepts
  • Applying standard methods and techniques

Academic skills:

  • Analysing and using information
  • Assessing and forming arguments
  • Creative problem solving

Intercultural skills:

  • Considering international perspectives
  • Understanding different cultural contexts and attitudes

2) What IB Diploma assessments and exams do students do?

The IB uses external and internal assessments to review students’ progress. However, final examinations are the most common type of assessment for IB courses because they are reliable assessment methods, and they ensure all students use a standard level of testing no matter which countries or areas they live in.

IB final exams often include:

  • Essay exam questions
  • Structured problems
  • Short-response questions
  • Data-response questions
  • Case study questions
  • Multiple-choice exam questions (these are rare!)

IB Diploma Programme External Assessment Types

Several programme areas use externally assessed coursework that allows IB students to work over an extended period while taking responsibility for their own learning and conducting their own research while supervised by appointed teachers. These assessments then go to external examiners for marking.

IB External assessments include:

  • Theory of Knowledge
  • Extended Essay

IB Diploma Programme Internal Assessment (IA) Types

Most courses have internal assessments (IAs) too. IAs are research-based assignments for each subject that students complete during the IB Diploma course’s second year (DP2). Student’s teachers grade these assignments and send samples to independent moderators to approve or change based on the work they receive.

Internal Assessments (IAs) include:

  • Orals for Language and Literature and Language Acquisition
  • Fieldwork for Geography
  • Laboratory work for the Sciences
  • Investigations for Mathematics
  • Artistic performances
Master IB DP1 with one-on-one tutoring sessions with experts at Lanterna Education - Lanterna Education

Master IB DP1 with Lanterna Education!

Lanterna Education tutors have years of experience helping students reach their full potential and get the marks they need to enter top universities worldwide.

We would love to help you! Check out our one-on-one tutoring with experienced tutors. We provide Free revision advice, resources, and study guides for students in the IB Diploma programme.

Good luck! We hope we’ve helped you understand the IB DP and busted any myths that may have stopped you from choosing the IB and reaching accademic success.

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For over 20 years, we’ve supported tens of thousands IB students worldwide with one clear focus: making high achievement feel more doable. Our team of experienced tutors have come together to combine their deep curriculum knowledge with practical strategies that are proven to work.

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The IB Diploma Programme (IB DP) is a rigorous, two-year pre-university curriculum designed for students aged 16-19. It's globally recognized and aims to develop students academically, creatively, and critically, preparing them for higher education and life beyond.

The IB DP is highly respected by top universities worldwide, easing the application process. Beyond admissions, it fosters critical thinking, lifelong learning, and cultural understanding, equipping students with a broad knowledge base and essential skills for academic and career success.

The IB DP has three mandatory core elements: Creativity, Activity, Service (CAS) for personal and social development; Theory of Knowledge (TOK) for critical thinking about knowledge; and the Extended Essay (EE), a 4000-word independent research project. These elements broaden education and develop key skills.

IB Diploma students choose six subjects, three at Higher Level (HL) and three at Standard Level (SL). HL subjects require 240 teaching hours and a greater depth of knowledge and skills, while SL subjects require 150 hours, providing breadth across different disciplines.

IB DP students are assessed through a combination of external examinations and internal assessments (IAs). External exams are standardized globally, while IAs (like orals, fieldwork, lab work, or investigations) are initially graded by teachers and then moderated externally to ensure consistent standards.

Lanterna Education provides expert one-on-one tutoring across all IB subjects and components. Our tutors, many of whom are 40+ point IB graduates, experienced teachers, or examiners, offer personalised support to help you understand complex concepts, improve study strategies, and achieve your full potential in the demanding IB DP.

The Lanterna IB consultation is a free, no-pressure 20-30 minute session with an IB Student Success Expert. It's designed to help students and parents gain clarity on their IB situation, discuss challenges, and receive a personalised plan for what to focus on next, without any obligation to book tutoring.

Yes, absolutely. Our 20-30 minute IB consultation is completely free of charge and comes with no obligation to purchase tutoring. It's an invaluable opportunity for you to get expert advice and a clear plan from an IB Student Success Expert.

Our Student Success Experts are highly experienced professionals with deep knowledge of the IB Diploma Programme. They guide students and parents through the complexities of the IB, helping them identify strengths, address weaknesses, and develop effective strategies for academic success and university applications.

Yes, our tutors are highly experienced in guiding students through all IB core components, including the Extended Essay (EE), Theory of Knowledge (TOK), and Creativity, Activity, Service (CAS). We provide tailored support to help you refine your research questions, structure your arguments, and meet the rigorous assessment criteria for these crucial elements.


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