Theory of Knowledge (TOK)

Your Complete Guide to the IB Core Component

IB TOK: the current requirements

Official sources reviewed August 25, 2026

Theory of Knowledge is a mandatory IB Diploma Programme core course. The current course requires two assessment tasks: a three-object exhibition with a commentary of no more than 950 words, worth 33%, and a 1,600-word essay responding to one of six prescribed titles, worth 67%. Schools set their own internal milestones and submission dates.

100 hours

Minimum TOK teaching time

5 AOKs

Current Areas of Knowledge

35 prompts

Choose one exhibition prompt unchanged

Up to 3

TOK + EE core points

Primary sources:IB: Theory of knowledge IB: Theory of knowledge subject brief IB: 2026 TOK examiner instructions IB: Diploma Programme passing criteria IB: Theory of knowledge guide

What is TOK?

Theory of Knowledge (TOK) is a core component of the IB Diploma Programme that encourages students to reflect on the nature of knowledge and how we know what we claim to know. It explores the question: "How do we know?"

TOK and the Extended Essay can add up to 3 core points to your Diploma total. The current IB matrix identifies a grade of E in either component as a failing condition.

Areas of Knowledge (AOKs)

• History
• Human Sciences
• Natural Sciences
• Mathematics
• The Arts

Current Course Themes

• Core: Knowledge and the knower
• Study 2 of 5 optional themes
• Knowledge and technology
• Language, politics, religion, or indigenous societies

TOK Assessment Breakdown

1/3

TOK Exhibition

✓ Internally assessed (by your teacher)
✓ Choose 3 objects linked to a prompt
✓ 950 words maximum
✓ Explore real-world manifestation of knowledge

2/3

TOK Essay

✓ Externally assessed (by IB examiners)
✓ Choose from 6 prescribed titles
✓ 1,600 words maximum
✓ Abstract exploration of knowledge questions

Deep Dive: TOK Exhibition

Flexible planning sequence

Your school sets the dates; use these stages to organize the work.

Stage 1

Choose the prescribed prompt

Review the 35 prescribed prompts, choose one that supports a focused exploration, and keep its wording unchanged.

Stage 2

Identify possible objects

List specific physical or digital objects with clear, real-world contexts that connect to the selected prompt.

Stage 3

Select three objects

Choose three objects that let you make distinct, well-justified links to the same prompt.

Stage 4

Draft the commentary

Explain each object's specific context, its link to the prompt, and the evidence that supports that link within the 950-word maximum.

Stage 5

Check and submit

Confirm the prompt is reproduced exactly, all three objects are identified, sources are acknowledged, and the commentary meets your school's deadline.

⚠️ Common Pitfalls to Avoid

✗

Using generic objects: Choose specific objects with identifiable real-world contexts rather than an object type such as 'a book.'

✗

Losing focus on the prompt: Make and justify a clear link between every object and the one prescribed prompt you selected.

✗

Being mainly descriptive: Use the objects to explore the knowledge question instead of only describing what the objects are.

✗

Repeating the same link: Use the three objects to develop distinct, well-supported contributions to the exhibition's overall exploration.

Deep Dive: TOK Essay

Flexible planning sequence

Your school sets the dates; use these stages to organize the work.

Stage 1

Read the six session titles

Use only the six prescribed titles released for your examination session and identify the knowledge issues each title raises.

Stage 2

Choose the best-fit title

Select the title you can explore with relevant examples and sustained links to the required areas of knowledge.

Stage 3

Plan the exploration

Outline a focused response that uses specific examples, evaluates different points of view, and considers implications and limitations.

Stage 4

Draft the essay

Develop a clear, coherent, and critical exploration of the prescribed title rather than a descriptive survey of the topic.

Stage 5

Revise and authenticate

Refine the argument, check the 1,600-word maximum, complete the required teacher interactions, and submit by your school's deadline.

⚠️ Common Pitfalls to Avoid

✗

Surface-level analysis: Explore implications, limitations, and the knowledge issues raised by the title instead of relying on definitions.

✗

Weak links to areas of knowledge: Keep examples and arguments explicitly connected to the areas of knowledge required by the prescribed title.

✗

Generic examples: Use specific examples and explain how each one advances the exploration of the prescribed title.

✗

Ignoring different points of view: Acknowledge and evaluate relevant alternative perspectives without forcing the essay into a fixed claim-counterclaim template.

✗

Exceeding the word limit: The essay maximum is 1,600 words, and examiners do not read beyond that limit.

What is Theory of Knowledge (TOK)?

Alongside the Extended Essay (EE) and Creativity, Activity, Service (CAS), TOK is a mandatory core component of the IB Diploma Programme. The subject brief allocates a minimum of 100 teaching hours. The current structure includes the core theme "Knowledge and the knower," two optional themes, and five Areas of Knowledge. Students examine how knowledge is produced, acquired, applied, and communicated while reflecting on assumptions, perspectives, values, and responsibility.

TOK asks you to examine how we know what we claim to know.

The current IB course focus

TOK questions may support more than one defensible response. Assessment focuses on how clearly and critically you explore the task, use specific examples, and evaluate relevant points of view.

Assessment of TOK

TOK has two assessed tasks: an externally marked essay of no more than 1,600 words and a teacher-marked, IB-moderated exhibition with an accompanying commentary of no more than 950 words. Each uses a holistic assessment instrument, and the two marks combine into an overall TOK grade from A to E. See the current IB examiner instructions.

2/3

Essay

Externally Assessed

1,600 words • Assessed by IB examiners

1/3

Exhibition

Internally Assessed

950 words • Assessed by teacher, externally moderated

The Essay, which is externally assessed, is worth two-thirds of the final grade; the Exhibition, which is internally assessed by your teacher and externally moderated, is worth one-third.

⚠️

Important: Both TOK assessment tasks must be submitted for an overall TOK grade to be awarded. Under the current Diploma Programme passing criteria, an overall grade of E in TOK, or a grade of E in the Extended Essay, is a failing condition for the diploma.

The ToK letter grade is then combined with your letter grade on the Extended Essay (EE); the total is converted into a score between 0 and 3 using a bonus points matrix. This numerical score will be added to the aggregate numerical score you earned in the six courses (each out of 7).

The TOK Exhibition

The current exhibition asks you to select one prescribed prompt, identify three objects with specific real-world contexts, and submit accompanying commentaries totaling no more than 950 words. The assessment instrument asks whether the exhibition successfully shows how TOK manifests in the world around us. That is the examiner's driving question: your job is to explain and justify each object's link to the prompt, not to write a general answer to the prompt.

Your TOK teacher will provide the list of 35 prescribed exhibition prompts. You must choose one and reproduce its wording exactly as the exhibition title. Objects may be physical or digital, but each must be specific and situated in an identifiable real-world context. A particular calculator used in a class investigation, a specific published photograph, or your own extended essay can work when the commentary makes a clear, well-supported link to the prompt.

Some schools organize a live or virtual exhibition event, but that local presentation is not a separate assessed component. Follow your teacher's instructions for images, citations, authentication, and the school's internal deadline.

Your teacher marks the exhibition on a 0-10 scale, and the IB moderates the school's marks. The current examiner instructions emphasize the following:

1
Clearly identifying the three objects and their contexts, and explaining in detail how they apply to the IA prompt.
2
Comprehensively justifying the link between each object and the IA prompt.
3
Using appropriate and compelling evidence to support the aforementioned link.
4
Using the selected prescribed prompt, with its wording unchanged, as the exhibition title.

The exhibition is assessed holistically. The strongest submissions keep the three objects and their specific contexts visible, explain each link to the selected prompt, justify why each object belongs, and support those links with appropriate evidence. Common pitfalls include:

Misunderstanding the purpose of the Exhibition.

The Exhibition, in some ways, is the opposite of the Essay (explained below). Rather than focusing on abstract or conceptual thinking, you should display how knowledge issues are present in the real world. Therefore, the Exhibition should focus on concrete, applicable examples rather than philosophical ones.

Failure to use strong, impactful objects.

Choose three specific objects whose real-world contexts let each contribute something useful to the selected prompt. Diversity is not a scoring requirement: similar objects are not penalized when each link is clearly explained and justified. Identify each object's context and cite its source, even when the object is your own.

Failure to clearly identify the IA prompt.

Use one of the 35 prescribed prompts unchanged and identify it clearly with the exhibition. An introduction or conclusion is not required; use the available words to explain each object's specific context, link to the prompt, justification, and supporting evidence.

Aim for specific real-world contexts, clear links, strong justification, and relevant evidence.

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The ToK Essay

For each examination session, the IB releases six prescribed essay titles. Choose one title from the list for your own session and keep the wording unchanged. Current titles require exploration of two of the five Areas of Knowledge. The essay should sustain a clear response to the prescribed title, use specific examples, evaluate different points of view, and consider the implications and limitations of its arguments. Previous-session titles are useful for practice but cannot replace the title assigned for your session.

The Planning and Progress Form (TK/PPF) records three teacher–student interactions and supports planning and authentication. A teacher may provide oral or written global advice on one complete draft, but the examiner does not use the TK/PPF when determining the essay mark.

The TOK essay is marked holistically using one driving question: does the student provide a clear, coherent, and critical exploration of the essay title? Review the current IB examiner instructions, then use these principles to plan:

Ensure that you 'unpack' the Essay title in your introduction and explain its relevance to the specific areas of knowledge that it identifies. The key here is to differentiate how the elements underpinning the title function in each area of knowledge specified in the title.

Base your arguments on specific examples from the two required Areas of Knowledge. Evaluate relevant alternative points of view and consider the implications and limitations of your own position. A formal claim-counterclaim template is not required; use the structure that best supports a coherent exploration of the title.

Organize the argument, examples, analysis, and evaluation deliberately, and stay within the 1,600-word maximum.

Keep the discussion focused on the title, linked to the required AOKs, and clear, coherent, and critical throughout.

Conclusion

TOK is unique to the IB Diploma Programme. It asks students to examine the nature, scope, and limits of knowledge across academic disciplines and real-world contexts. The exhibition and essay then test complementary skills: connecting knowledge questions to specific objects in the world and sustaining a critical conceptual exploration of a prescribed title.

Authors:

This guide was authored by Rob J., an accomplished writer and actor holding a Master's degree in English Language and Literature.

To ensure the highest level of accuracy and relevance to the current IB curriculum, this article was peer-reviewed by Dr. Brent Whitted. Dr. Whitted holds a PhD in English Language and Literature and is the author of the official Oxford IB Diploma Programme guide, IB Prepared: English A Literature.

Frequently Asked Questions: Understanding Theory of Knowledge (TOK)

General TOK & Scoring

What is the main goal of TOK?+

TOK asks students to reflect on the nature, scope, and limits of knowledge and on how we know what we claim to know. It develops the ability to examine knowledge questions, use examples, and evaluate different points of view.

Can I fail the IB Diploma because of TOK?+

Yes. TOK is a required part of the IB Diploma Programme. Under the current core-points matrix, an E in TOK or the Extended Essay is a failing condition, and a grade must be awarded in both components.

How are the core points calculated?+

Your TOK grade (A-E) is combined with your Extended Essay grade (A-E) on the IB core-points matrix. Together they can add up to 3 points to the 42 available from the six subjects, for a maximum Diploma score of 45. For example, B in TOK and B in the EE earns 2 core points.

Is there a right answer in TOK?+

TOK questions can support more than one defensible response. Marks depend on how clearly and critically you explore the prescribed title or exhibition prompt, connect examples to knowledge issues, and evaluate relevant points of view.

What is the difference between the essay and exhibition?+

The exhibition uses three specific objects and a commentary of no more than 950 words to explore how TOK manifests in the world around us; it is teacher-marked and IB-moderated. The 1,600-word essay responds to one of six prescribed titles for the examination session and is marked externally by IB examiners.

What are Areas of Knowledge (AOKs)?+

The current course has five Areas of Knowledge: history, the human sciences, the natural sciences, the arts, and mathematics. All six prescribed essay titles require exploration of two AOKs. AOKs are not a required feature of the exhibition assessment instrument.

Who grades my TOK work?+

Your teacher marks the exhibition, and the IB moderates school marks. IB examiners mark the essay externally. The exhibition contributes 33% of the TOK result and the essay contributes 67%.

Does an oral presentation count toward my TOK grade?+

No separate oral presentation is part of the current assessed TOK components. The assessed exhibition consists of three objects with accompanying commentaries. A school may organize a live or virtual exhibition event, but local presentation arrangements do not add a separate IB assessment mark.

How much time is allocated to TOK?+

The current TOK subject brief allocates a minimum of 100 teaching hours across the core theme, optional themes, Areas of Knowledge, and assessment work. Your school sets its own internal planning and submission dates.

Exhibition & Essay Strategy

What counts as an object for the exhibition?+

An object may be physical or digital, but it must be specific and have an identifiable real-world context. A particular calculator used in a class investigation or a specific published photograph can work; a generic category such as 'a textbook' does not establish enough context on its own.

Can I create my own prompt for the exhibition?+

No. Choose exactly one of the 35 prescribed exhibition prompts and reproduce its wording unchanged. The selected prompt is used as the title of the exhibition.

How do I choose a TOK essay title?+

Choose one of the six prescribed titles released for your examination session. Compare the knowledge issues and required AOKs in each title, then select the one you can explore with relevant examples and sustained analysis. A title from another session is useful for practice but cannot replace your session's prescribed title.

What is the most common mistake in the exhibition?+

A common weakness is describing an object without clearly explaining and justifying its link to the selected prompt. Identify the object's specific real-world context, make the link explicit, and support that link with appropriate evidence.

What does unpacking the title mean in the essay?+

It means identifying the knowledge issues and important terms in the prescribed title, considering how they function in the required AOKs, and deciding what position your essay will explore. Definitions alone are not enough; the discussion must stay focused on the title.

How many words are the TOK assessments?+

The exhibition commentary has a maximum of 950 words, excluding the prompt, object labels, references, and footnotes. The TOK essay has a maximum of 1,600 words. IB examiner instructions say material beyond the applicable maximum is not read.

Do I need a formal counterclaim in my essay?+

No fixed claim-counterclaim template is required. The current assessment language rewards awareness and evaluation of different points of view, implications, and limitations. Use whatever structure keeps the exploration clear, coherent, critical, and focused on the prescribed title.

Can I use examples from my personal life in the essay?+

A personal example can be useful when it is specific, relevant, and analyzed as evidence for the prescribed title. What matters is the quality of the link to the knowledge question and AOK, not whether an example is personal or drawn from an academic subject.

What is the TK/PPF form?+

The Planning and Progress Form records the required interactions with your teacher during the essay process and supports authentication of the work. Follow the version and deadlines supplied by your TOK teacher or DP coordinator.

Can HYC tutors help me write my TOK essay?+

HYC tutors can help you interpret the title, test the logic of your argument, plan a structure, and understand feedback. They cannot write or rewrite assessed work for you. The submitted essay and exhibition commentary must remain your own authentic work.