TOK Essay Titles May 2027: How to Choose and Plan Yours

TOK Essay Titles May 2027: How to Choose and Plan Yours

Quick answer: The IB has released six prescribed titles for the May 2027 TOK essay. They cover artists vs historians, changing values, knowledge built on assumptions, coincidence, simplicity in explanations, and paradox. You write on one title, exactly as worded, in up to 1,600 words. Choose the title where you have the strongest real examples in the areas of knowledge it names, not the one that sounds most impressive. Then plan your claims, counterclaims and evaluation well before your school's internal deadline.

The TOK essay is worth two-thirds of your Theory of Knowledge grade. TOK and the Extended Essay together can add up to three bonus points to your IB Diploma score. They can also stop you getting the Diploma at all, because an E in either one is a failing condition. So the title you pick in the next few weeks matters more than it might seem.

This guide summarises the six May 2027 titles, explains how the essay is marked, and gives you a way to choose a title and plan it. There's also a realistic timeline up to the IB's March deadline.

Key takeaways

• There are six titles, and you answer one. Each title tells you which areas of knowledge (AOKs) to discuss. Some name specific AOKs, and some let you choose two.

• Use the exact wording. An essay on a title that isn't one of this session's prescribed titles, or on a reworded title, can score zero.

• The word limit is 1,600 words. Your bibliography and references don't count towards it.

• The essay is marked out of 10 with a single holistic markband, which rewards a clear, coherent and critical exploration of the title.

• Good examples win marks. Specific, real-life examples from your own subjects and experience score better than famous examples that everyone else uses.

The six May 2027 TOK titles at a glance

The summaries below are in our own words, to help you compare the titles. Your TOK teacher will give you the official wording, and that's the version you must use in your essay.

#	What the title asks (our summary)	Areas of knowledge	A good fit if you...
1	Whether artists or historians give us the better understanding of human experience	The arts and history	Take History or a Group 6 arts subject
2	How values can keep guiding the search for knowledge when the values themselves change over time	Any two AOKs	Like ethics, and can find historical examples of changing norms
3	How knowledge can be reliable when it rests on assumptions	The human sciences and one other	Take Economics, Psychology or Business Management
4	Whether, as a claim attributed to Agatha Christie suggests, every coincidence is worth noticing even if you later dismiss it	Mathematics and one other	Are confident in Maths AA or AI and like probability
5	How much simplicity should count when choosing between competing explanations	Any two AOKs	Like science, or the history of ideas
6	What we gain from exploring paradoxes and counterintuitive ideas	The natural sciences and one other	Take Physics or Chemistry, or enjoy puzzles in Maths

How the TOK essay is marked

An IB examiner marks your essay out of 10 against one overall question: does your essay give a clear, coherent and critical exploration of the title? There are no separate criteria for structure, examples or language. The examiner forms one overall judgement and places the essay in a markband:

Marks	Markband	What it usually looks like
9–10	Excellent	Stays focused on the title the whole way through, with sharp evaluation, well-chosen examples and a sense of what's at stake
7–8	Very good	Clear and relevant, with good examples and evaluation, though some links are underdeveloped
5–6	Good	Mostly relevant, but leans on description, and the evaluation is uneven
3–4	Adequate	Some relevant points, but loosely connected to the title
1–2	Rudimentary	Barely addresses the title, with little evidence of TOK thinking

The gap between a 6 and an 8 is nearly always evaluation. Weaker essays describe what is true in each area of knowledge. Stronger essays weigh how far it's true, under what conditions, and what follows if it is. If you want a refresher on the TOK vocabulary examiners expect, such as knowledge questions, perspectives and the knowledge framework, see our guide to the Theory of Knowledge framework.

How to choose your TOK essay title

Don't pick a title because it sounds the most philosophical. Ask yourself these five questions about each one:

1. Do I know the AOKs it names? A title that requires mathematics is a risk if you're unsure about mathematical knowledge beyond your exam questions.

2. Can I name two specific, real examples for each AOK right now? If you can't come up with any in five minutes, you'll struggle to find them later.

3. Can I argue both sides? A title you completely agree with leaves you nothing to evaluate.

4. Do I understand the key terms? Words like "assumptions", "simplicity" and "paradox" need a clear working definition in your introduction.

5. Will I still find it interesting in February? You'll write several drafts, so pick something you're curious about.

Narrow the list to two titles, write a one-page plan for each, and take both to your first meeting with your TOK teacher. One plan nearly always turns out stronger.

How to approach each May 2027 title

The angles below are starting points to test, not finished arguments. Check every example in your own sources before you use it.

Title 1: The artist or the historian (the arts and history)

Key terms to define: "appreciation" (understanding, or feeling?) and "human experience" (events, or what it was like to live through them?).

Possible angle: Historians aim for evidence-based accounts of what happened. Artists can show what it felt like. Picasso's Guernica (1937), painted in response to the bombing of the Basque town, works differently from a historian's account of the Spanish Civil War. Art Spiegelman's graphic memoir Maus tells the history of the Holocaust through one family's memory.

Counterclaim: Historians also handle personal experience, through oral history and diaries. Meanwhile, art can distort, simplify or serve propaganda.

Watch out for: Treating "better" as obvious. A strong essay asks: better for what purpose, and for whom?

Title 2: Values that change over time (any two AOKs)

Key terms: "values" (ethical, epistemic or cultural?) and "guide" (decide which questions get asked, or how knowledge is produced?).

Possible angle: In the natural and human sciences, research ethics have shifted sharply. The US Public Health Service syphilis study at Tuskegee (1932–1972) helped push informed consent to the centre of research rules. Changing values made knowledge production more trustworthy, not less.

Counterclaim: If values keep changing, does knowledge built under old values lose its legitimacy? In history, the questions historians ask shift with each generation, as the rise of social and women's history shows.

Watch out for: Turning the essay into a list of moral failures. Keep coming back to how the values guided the pursuit of knowledge.

Title 3: Knowledge built on assumptions (the human sciences and one other)

Key terms: "assumptions" (stated or hidden?) and "reliable" (consistent, or likely to be true?).

Possible angle: Economic models often assume rational decision-makers. Behavioural economics, building on work by Daniel Kahneman and Amos Tversky, showed where that assumption fails, and economists still find many of the models useful. In mathematics, results follow reliably from axioms. When Euclid's parallel postulate was replaced, the result wasn't an error. It was a whole new non-Euclidean geometry.

Counterclaim: Some assumptions are so deeply hidden that we can't test them, and that limits how reliable the knowledge built on them can be.

Watch out for: Saying "all knowledge has assumptions, so nothing is reliable". That ends the discussion instead of exploring it.

Title 4: Coincidence (mathematics and one other)

Key terms: "coincidence" (random, or not yet explained?) and "worth noticing" (worth investigating, or worth believing?).

Possible angle: In mathematics, probability shows that coincidences are far more common than intuition suggests. The birthday problem shows that in a group of just 23 people, the chance that two share a birthday is over 50%. In the natural sciences, Alexander Fleming's attention to an odd mould on a culture plate in 1928 led to penicillin.

Counterclaim: Noticing every coincidence can mislead us. In the human sciences, searching data until some pattern appears (p-hacking) produces results that fail to replicate.

Watch out for: Using the quote's author as evidence. The claim needs testing, not respect for who said it.

Title 5: Simplicity in explanations (any two AOKs)

Key terms: "simplicity" (fewer assumptions, fewer parts, or easier to use?) and "prioritized" (above accuracy? above predictive power?).

Possible angle: Occam's razor is a well-known principle in the natural sciences. Kepler's elliptical orbits replaced complicated systems of circles and described the planets more simply and more accurately. In history, though, single-cause explanations of events such as the outbreak of the First World War tend to be weaker than explanations with several causes.

Counterclaim: Simpler explanations are easier to test and communicate, but reality is under no obligation to be simple.

Watch out for: Treating simplicity as a single quality. Separating its different meanings is where the evaluation happens.

Title 6: Paradox and the counterintuitive (the natural sciences and one other)

Key terms: "paradoxical" (an actual contradiction, or one that only seems to be?) and "value" (what we gain from it, and for whom?).

Possible angle: Quantum behaviour, such as light acting as both a wave and a particle in double-slit experiments, forced scientists to rethink basic concepts. Olbers' paradox, the question of why the night sky is dark, points towards a universe of finite age. In mathematics, Russell's paradox led to firmer foundations for set theory.

Counterclaim: Some paradoxes produce endless debate without new knowledge. Exploring them may cost more than they return.

Watch out for: Spending 400 words explaining the physics. The examiner is marking your TOK thinking, not your science notes.

A structure that works for 1,600 words

Section	Words (approx.)	What it does
Introduction	150–200	Defines key terms, states your interpretation of the title and outlines your line of argument
AOK 1: claim and example	300	Argues one position with a specific example
AOK 1: counterclaim and evaluation	250	Tests that position and weighs how far it holds
AOK 2: claim and example	300	Argues in the second AOK, ideally from a different direction
AOK 2: counterclaim and evaluation	250	Tests and weighs it again
Conclusion	150–200	Gives your considered answer, its implications, and one perspective you haven't settled

Many strong essays draw a comparison between the two AOKs inside the body, instead of saving it for the conclusion. That's where much of the evaluation credit sits.

Timeline to the March 2027 deadline

The IB's upload deadline for May-session TOK essays falls in March, and your school will set its internal deadline weeks earlier. You'll also have three recorded interactions with your TOK teacher on the planning and progress form. A typical plan:

When	What to do
November	Shortlist two titles and draft one-page plans. First interaction with your teacher
December	Choose your title and gather examples. Write a full outline with claims and counterclaims
January	Write the full draft. Your teacher can comment on one draft (second interaction)
February	Revise: sharpen the evaluation, cut description and check the word count and references
Early March	Final version submitted to your school. Final interaction on the form

This is also the busiest stretch of Year 2, with Extended Essay deadlines landing in the same months. Our guide to Extended Essay structure and topics can help you plan both together.

Common TOK essay mistakes

1. Changing the title. Use it exactly as given, including any instruction about which AOKs to discuss.

2. Describing instead of evaluating. "Scientists use experiments" is description. "Experiments make claims testable, but only for questions that can be controlled in a lab" is evaluation.

3. Overused examples. Examiners read a lot about the same few famous experiments. Your own coursework, labs or reading make fresher examples.

4. Losing the title in the middle. Each paragraph should link back to the title in its last sentence.

5. No real conclusion. "It depends" isn't a conclusion unless you say what it depends on.

How the TOK essay affects your Diploma score

Your TOK and Extended Essay grades combine to give up to 3 bonus points out of the 45-point maximum. Our guide to IB Diploma requirements explains how the core points work and which results are failing conditions.

The TOK essay will take a lot of time between now and March. sortmyprep keeps your IB subjects on track meanwhile, with topic-by-topic past papers, unlimited practice questions aimed at your weak topics, and sorty, an AI tutor inside every question. Try it free for 7 days.

Frequently asked questions

What are the TOK essay titles for May 2027?

The six titles cover artists vs historians, changing values, knowledge built on assumptions, a claim about coincidence attributed to Agatha Christie, simplicity in explanations, and paradox. Each title names the areas of knowledge to discuss. Get the official wording from your TOK teacher.

How long is the TOK essay?

The maximum is 1,600 words. The bibliography and reference footnotes don't count towards it. Examiners stop reading at 1,600 words, so nothing after that point earns credit.

How is the TOK essay marked?

An IB examiner marks it out of 10 using one holistic markband. The question is whether the essay gives a clear, coherent and critical exploration of the title. The essay counts for two-thirds of your TOK grade, and the exhibition counts for one-third.

Which May 2027 TOK title is easiest?

No title is easiest for everyone. The best one for you is the title where you can find specific examples in both of the areas of knowledge it requires, and argue both sides with confidence.

Can I change the wording of a prescribed title?

No. You must use the title exactly as the IB gives it. An essay on an altered title, or on one that isn't prescribed for your session, risks a mark of zero.