Theory of Knowledge · May 2027 session
TOK essay titles, May 2027
Written and cross-checked by IB Diploma graduates: Alexander (41), Alejandro (40), Martina (40), Victoria (38), Martin (35), Maria (34)
· Checked against official IB guidance · Editorial policy
The six prescribed titles
Title 1
Do we gain a better appreciation of the human experience from the artist or the historian? Discuss with reference to the arts and history.
Define appreciation, human experience, and what each discipline actually offers — representation vs reconstruction.
Areas of knowledge that contrast well: Arts and history are required. Contrast subjective interpretation with evidential narrative.
Where students lose marks: Treating one side as obviously superior instead of arguing where each succeeds and fails.
A useful way into the title: Compare what an artist can reveal through interpretation and lived experience with what a historian can reconstruct through evidence and argument.
The tension to resolve: Appreciation is not the same as factual accuracy. The useful contrast is what each discipline lets us understand about human experience, and what each leaves out.
Evidence to prepare: Prepare one specific artwork or artistic movement and one historical case where the available evidence changes what can responsibly be claimed.
Title 2
If values change over time, how can they, nevertheless, continue to guide the pursuit of knowledge? Discuss with reference to two areas of knowledge.
Values here means ethical or methodological commitments, not personal preference.
Areas of knowledge that contrast well: Pick two AOKs where value-change shows up differently — e.g. human sciences vs history.
Where students lose marks: Listing value changes without explaining how they still constrain or direct inquiry.
A useful way into the title: Separate values that guide what researchers choose to study from values that shape the standards used to judge evidence.
The tension to resolve: If values change, knowledge does not automatically become arbitrary. Ask which standards can change while inquiry remains disciplined and accountable.
Evidence to prepare: Choose two AOKs where changing ethical or methodological values visibly changed research questions, methods, or accepted explanations.
Title 3
In the production of knowledge, how can knowledge be reliable if it is built on assumptions? Discuss with reference to the human sciences and one other area of knowledge.
Assumptions are not automatically flaws — name which assumptions matter and when they break.
Areas of knowledge that contrast well: Human sciences are required; the second AOK should contrast how assumptions are handled.
Where students lose marks: Claiming science has no assumptions, or that assumptions make all knowledge equally unreliable.
A useful way into the title: Treat assumptions as necessary starting points that can be tested, limited, or replaced rather than as automatic defects.
The tension to resolve: Reliability depends less on having no assumptions and more on making assumptions visible, checking their consequences, and knowing where they stop working.
Evidence to prepare: Use one human-sciences example with an explicit model or sampling assumption and a contrasting AOK that handles assumptions differently.
Title 4
To what extent do you agree with the claim that "any coincidence is worth noticing; you can throw it away later if it is only a coincidence" (Agatha Christie). Answer with reference to mathematics and one other area of knowledge.
Coincidence vs pattern; when noticing anomalies drives discovery vs when it wastes effort.
Areas of knowledge that contrast well: Mathematics is required — probability, false positives, statistical tests.
Where students lose marks: Quoting Christie without tying the quotation to how knowledge is actually produced in each AOK.
A useful way into the title: Distinguish noticing an unexpected pattern from accepting it as meaningful. The title is about what happens before evidence is strong enough to decide.
The tension to resolve: Attention to coincidence can generate discoveries, but pattern-seeking also creates false positives. The value lies in disciplined follow-up, not the coincidence itself.
Evidence to prepare: Use a mathematics or statistics example involving probability or false positives, then contrast it with another AOK where anomalies are interpreted differently.
Title 5
In the production of knowledge, when choosing one explanation over another, to what extent should simplicity be prioritized? Discuss with reference to two areas of knowledge.
Simplicity (parsimony) vs explanatory power — Occam is a tool, not a rule.
Areas of knowledge that contrast well: Natural sciences and mathematics often contrast well with history or the arts.
Where students lose marks: Treating simpler as always better without cases where complexity is justified.
A useful way into the title: Define simplicity precisely: fewer assumptions, fewer variables, easier explanation, or greater elegance are not always the same thing.
The tension to resolve: A simpler explanation can be preferable when explanatory power is equal, but simplicity can become distortion when the phenomenon itself is complex.
Evidence to prepare: Pick two AOKs where competing explanations differ in complexity and show what is gained or lost by choosing the simpler one.
Title 6
In the pursuit of knowledge, what value is there in exploring the paradoxical or the counterintuitive? Discuss with reference to the natural sciences and one other area of knowledge.
Counterintuitive findings that later became accepted knowledge vs dead ends.
Areas of knowledge that contrast well: Natural sciences are required; pair with an AOK where intuition is treated differently.
Where students lose marks: Listing fun paradoxes without evaluating whether they actually advanced knowledge.
A useful way into the title: Focus on when paradoxical or counterintuitive findings force a discipline to revise concepts, methods, or expectations.
The tension to resolve: Being surprising is not enough. The question is whether exploring the surprise creates better knowledge or merely an interesting dead end.
Evidence to prepare: Use one natural-sciences case where a counterintuitive result changed understanding and contrast it with another AOK where intuition has a different epistemic role.
What a prescribed title actually is
The Theory of Knowledge essay is not a topic you choose. For every examination session the IB issues six prescribed titles, and you answer one of them — worded exactly as given, with its number on your essay. You may not write your own title, shorten one, or merge two. The essay is 1,600 words maximum and is marked out of 10 against a single global assessment instrument that is the same for every title and every subject you take.
A title is deliberately arguable. It will contain at least one term — “certainty”, “evidence”, “objectivity”, “a discipline” — that can be read more than one way, and the marks come from interrogating that ambiguity across two areas of knowledge rather than resolving it. This is why the title you pick matters more than how hard you work afterwards: a title you cannot argue two ways caps your grade before you start writing.
What changes between sessions — and what doesn't
This is the part most students get wrong. The titles change completely every session; almost nothing else does. Preparation built on a specific May 2026 title is wasted. Preparation built on the method transfers entirely.
| Element | Session to session |
|---|---|
| Titles | All six change every session. A May 2026 title is never reusable for May 2027. |
| Number of titles | Always six. This has not changed and is not expected to. |
| Assessment instrument | The single global TOK essay assessment instrument, marked out of 10, applies across sessions. |
| Word limit | 1,600 words, unchanged between sessions. |
| What you must not change | The title wording. You answer one of the six exactly as given, with its number on your essay. |
The May 2027 timeline
Start of DP2 (around September)
The six prescribed titles for the May 2027 session are released to schools. Your TOK teacher distributes them — they are not published by the IB for students directly.
September – November
Choose your title and draft. Most schools run an internal first-draft deadline well before the IB one, and you get exactly one round of written supervisor feedback on a single draft.
Around February – early March 2027
School-level final deadline, then upload to the IB. Your coordinator sets the internal date; it is always earlier than the IB's. Confirm the exact date with your coordinator rather than trusting any third-party page, including this one.
Dates follow the normal pattern for a May session. Sessions and school deadlines vary — confirm yours with your Diploma Programme coordinator, not with any third-party page.
Choosing the title you can actually finish
Most advice tells you to pick the title you find most interesting. That is how students lose three weeks to a title they cannot build an argument for. Choose on evidence you already have, in a single afternoon:
Step 1
Give each title one page, not one day
For each title you are considering, write a one-sentence position, two areas of knowledge that would answer it differently, and two real examples per area. Stop after a page. The title where that page fills fastest is your title — that is the whole test.
Step 2
Pick contrast, not interest
The strongest essays come from two areas of knowledge that genuinely disagree about the title. History and the natural sciences, or the arts and mathematics, give you more to argue than two similar areas. A title you find fascinating but can only argue one way is a slower, weaker essay.
Step 3
Reject titles whose key term you cannot define
If you cannot say what 'certainty', 'evidence', 'objectivity', or 'a discipline' means in your own words within a minute, that title will cost you weeks. Definitions are the spine of the essay, not decoration.
Step 4
Check you have real examples before committing
Specific, verifiable examples — a named study, a named work, a named historical episode. If your examples are still generic after twenty minutes, the title is not workable for you no matter how good it sounds.
For the full unpacking method once you have chosen — definitions, knowledge questions, and turning a title into a thesis — see choosing and unpacking a prescribed title.
What to do before you start drafting
- • Copy the exact wording of the title you choose from your school's May 2027 release and keep it visible while you plan.
- • Define the title's key terms before collecting examples. If two definitions lead to different arguments, that tension belongs in the essay.
- • Collect specific, defensible examples for each required Area of Knowledge before writing body paragraphs.
- • Read the assessment instrument once and use it as a check on every paragraph: argument, evidence, perspectives, and direct engagement with the title.
Sources & verification
Primary-source references used to verify key assessment facts on this page. Last source check: September 22, 2026.
The exact May 2027 prescribed-title sheet is distributed through IB school/coordinator channels and does not currently have a stable public IB URL. The six title wordings on this page were cross-checked against school-facing copies; if your school's authoritative copy differs by even one word, use your school's copy.
- IB — Theory of knowledgeOfficial overview confirming the TOK essay's 1,600-word format.
- IB — TOK example essays and prescribed-title processOfficial page confirming that the IB issues six titles and changes them each examination session.
- IB — TOK examiner instructions 2026Primary examiner instructions for the TOK essay task and assessment structure; this is not the May 2027 title sheet.
Questions
When are the May 2027 TOK essay titles released?
The six prescribed titles for a May session are released to schools around the start of DP2 — that is roughly September of the preceding year, so around September 2026 for the May 2027 session. The IB distributes them through schools rather than publishing them for students directly, so your TOK teacher or Diploma Programme coordinator is the authoritative source for your session.
Are the May 2027 titles the same as May 2026?
No. All six prescribed titles change every examination session. A May 2026 title cannot be reused for May 2027, and any preparation built around a specific May 2026 title does not transfer. What does transfer is the method: choosing a title you can argue two ways, defining its key terms, and building real examples.
How many prescribed titles are there, and can I write my own?
Six per session, and no. You must answer one of the six, worded exactly as issued, with its number on your essay. You cannot write your own title or edit the wording of one, though you should absolutely reword it inside your analysis to show you have interrogated it.
Which May 2027 title should I choose?
Not the most interesting one — the one you can finish. Give each candidate title a single page: a one-sentence position, two areas of knowledge that answer it differently, and two specific examples per area. Whichever page fills up fastest is your title. This takes an afternoon and routinely saves weeks.
How long is the TOK essay and how is it marked?
1,600 words maximum, marked out of 10 against the single global TOK essay assessment instrument. The essay and the TOK exhibition together produce your TOK grade, which combines with the Extended Essay for up to 3 Diploma points.
Can I use AI on my TOK essay?
Using AI to write the essay and submitting it as your own work is academic misconduct. Using a tool to check a draft you wrote against the assessment instrument is formative feedback, closer to what a teacher does. iBacalao gives feedback on your draft — it does not write any part of your essay.
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