How to Write an Extended Essay for IB Students

What Is the IB Extended Essay — and Why Does It Matter More Than You Think?

The IB Extended Essay is a 4,000-word independent research paper that sits at the core of the IB Diploma Programme. Every IBDP student writes one. You choose a topic within one of your six IB subjects, develop a focused research question, conduct genuine independent research, and produce an argument-driven essay assessed externally by International Baccalaureate examiners. Think of it as a condensed undergraduate thesis — the IB’s way of testing whether you can actually do academic work, not just pass subject exams. If you’re already working on your research paper skills, the Extended Essay is where those skills get their most rigorous test in secondary education.

The stakes are significant. The EE is graded on a scale of A to E and contributes directly to your Diploma score through a combined EE/TOK matrix. A strong performance across both can add up to 3 bonus points. An E grade in the EE — or a combined E across EE and TOK — triggers automatic Diploma failure, regardless of how well you scored in your six subjects. This is the only IB component where a single weak performance can cost you the Diploma entirely. That fact alone makes understanding how to write the extended essay correctly one of the most important things an IB student can do.

Beyond points, the Extended Essay builds something that university admissions teams in the United Kingdom and the United States explicitly value: demonstrated independent research ability. A well-executed EE in a subject relevant to your intended degree is genuine evidence of academic interest and intellectual maturity — something most high school curricula can’t provide. Students at UK universities like Oxford and Cambridge routinely reference strong EE topics in personal statements and admissions interviews. American colleges, especially those with selective research programs, treat it similarly. The EE is also your most direct preparation for university dissertation and thesis work. Every skill it demands — focused question-setting, source evaluation, argumentation, citation discipline — is a skill you’ll use for the rest of your academic career. Writing a literature review is a core component of most EEs and a skill that extends directly into university research.

What Makes the Extended Essay Different From Regular Essays

Most school essays give you the question. The Extended Essay asks you to generate your own — and that’s where most students struggle first. Your research question defines everything: the scope of your research, the depth of analysis possible, the type of evidence you can use, and whether your essay can score in the upper bands. A poorly chosen research question can doom an otherwise well-written essay under Criterion A (Focus and Method) before the examiner reads a single body paragraph. Thesis statement writing is directly related — both require you to state a specific, defensible claim rather than a broad topic area.

The second major difference is length and sustained argument. At 4,000 words, the EE is longer than any essay most IB students have written. But it isn’t 4,000 words of description or summary — it’s 4,000 words of structured analytical argument, where each section builds toward a specific response to your research question. Students who treat the EE as a long research report rather than an argumentative essay consistently underperform on Criterion C, which is the highest-weighted criterion at 12 points. Argumentative essay skills are the single most transferable ability from regular school writing to the EE.

Subject Groups: Where Can You Write Your Extended Essay?

You may write your Extended Essay in any subject from IB Diploma Groups 1 through 6 — provided it is offered at your school and you are registered for it. You do not need to write in a Higher Level subject; a Standard Level subject is perfectly acceptable. The six groups are: Group 1 (Studies in Language and Literature), Group 2 (Language Acquisition), Group 3 (Individuals and Societies), Group 4 (Sciences), Group 5 (Mathematics), and Group 6 (The Arts). There is also a World Studies Extended Essay option, which allows an interdisciplinary investigation across two subject groups around a global theme — but this requires specific planning and school approval. The strong general advice is to write in a subject you know well and genuinely care about. Passion matters over the months-long EE timeline, and subject familiarity dramatically improves your ability to evaluate sources and develop nuanced arguments.

The Five IB Extended Essay Assessment Criteria: What Examiners Actually Mark

Before writing a single word of your Extended Essay, you need to understand what it will be marked on. The International Baccalaureate assesses the EE against five explicit criteria, for a maximum of 34 points. Your letter grade — A through E — depends on where your total falls in the grade boundary table. IB’s official Extended Essay page publishes the current grade boundaries for each examination session. Most students read these criteria once and think they understand them. The ones who score A grades read them repeatedly and actively interrogate every paragraph of their draft against each criterion before submitting.

Criterion A: Focus and Method (6 Points)

Criterion A evaluates whether your research question is clearly stated, focused, and appropriate for the chosen subject. Examiners also assess whether your investigative approach is logical, coherent, and well-suited to the research question. A narrow, specific, and well-framed research question automatically makes Criterion A easier to satisfy — and equally makes Criteria B and C easier to fulfill, because a focused question constrains the scope to a depth that is achievable and assessable. A vague research question like “What is the impact of social media?” cannot be properly answered in 4,000 words, and examiners marking under Criterion A will identify this immediately. The methodology section of your introduction should explicitly explain how you are approaching the question and why that approach is appropriate.

Criterion B: Knowledge and Understanding (6 Points)

Criterion B assesses your understanding of the topic and your subject area. It is not just about how much you know — it is about how correctly and appropriately you apply knowledge, concepts, and theories to your research question. Examiners at this criterion are checking whether you understand the academic context of your topic: what the existing literature says, what theoretical frameworks are relevant, and whether you can situate your argument within the broader discipline. This is where the quality of your sources becomes visible. Citing only textbooks and Wikipedia fails Criterion B in the upper bands; citing peer-reviewed academic sources, primary documents, and subject-specific research demonstrates the subject literacy that distinguishes stronger essays. Academic research techniques — particularly using databases like JSTOR, Google Scholar, and PubMed — are essential tools for meeting this criterion effectively.

Criterion C: Critical Thinking (12 Points)

Criterion C is where the Extended Essay is won or lost. It carries 12 of the 34 available points — more than any other criterion. The IB defines critical thinking in this context as analysis, evaluation, and synthesis: not just presenting information, but examining it, questioning it, identifying its implications, and using it to build and defend a position. Most students underperform here because they write descriptively when they should be writing analytically. Description tells the examiner what happened or what a source says. Analysis tells the examiner what it means and why it matters for your argument. Evaluation goes further: it questions the reliability or significance of the evidence, considers alternative interpretations, and positions your argument in relation to them. Critical thinking skills are learnable and practiceable — and the EE is the right context in which to practice them seriously.

Criterion D: Presentation (4 Points)

Criterion D evaluates the structure, layout, and visual organization of your essay. This includes the completeness and formatting of your title page, the organization and accuracy of your table of contents, the correct and consistent use of headers and subheadings, the formatting of page numbers, and the consistency of your bibliography and citation style. It also covers the appropriate use of appendices and the visual presentation of any data, tables, or figures. Four points may seem small, but losing Criterion D marks is purely avoidable — these are the easiest marks to earn if you follow the IB formatting guide correctly, and the most embarrassing to lose. Proofreading strategies applied systematically to formatting — not just language — will protect your Criterion D score.

Criterion E: Engagement (6 Points)

Criterion E is the newest and most misunderstood of the five criteria. It assesses your personal intellectual engagement with the research process, evaluated primarily through your Researcher’s Reflection Space (RRS). The RRS is the structured reflective record you maintain across the three mandatory supervisor sessions. Examiners look for evidence that you genuinely grappled with the research — that you encountered real intellectual challenges, changed your approach in response to them, and reflected critically on your own methodology and limitations. A generic reflection (“I found the research interesting”) scores poorly. A specific, intellectually honest reflection (“My initial methodology assumed consistent historical records were available, but I discovered significant gaps in the archive for the 1930s that required me to reframe my analysis from cause-and-effect to comparative case study”) demonstrates exactly what Criterion E rewards. Reflective essay writing skills are directly applicable to the RRS.

How to Choose an Extended Essay Topic and Craft a Research Question That Scores

Your Extended Essay topic and research question are the most consequential decisions you’ll make in the entire process. Examiners consistently report that weak research questions are the earliest predictor of a weak essay. A student can write with genuine intelligence and effort throughout all 4,000 words — but if the question is too broad, too descriptive, or poorly framed for the subject, marks under Focus and Method and Critical Thinking are compromised from the first page. Getting the research question right deserves more time and care than most IB students give it. How to write a strong thesis statement covers the underlying logic — a good research question and a good thesis statement both require the same precision of claim.

Step 1 — Start With a Subject, Not a Topic

The first question isn’t “what do I want to write about?” It’s “which subject do I know best and care about most?” This distinction matters because subject familiarity gives you the evaluative vocabulary to assess sources critically, identify theoretical frameworks, and construct disciplinarily appropriate arguments. A student who loves biology and chooses to write an economics EE because the topic sounds impressive will struggle with Criterion B (Knowledge and Understanding) far more than a student who writes in their strongest subject on a topic they find genuinely interesting. Choose the subject first. The topic will emerge from your knowledge of it. College admission essays benefit from a similar principle — authenticity of interest is always more compelling than performed enthusiasm for a prestigious-sounding area.

Step 2 — Narrow From Broad Interest to Specific Question

Once you have a subject and a general area of interest, the research question development process follows a narrowing funnel. Start broad, then apply three successive constraints: specificity, contestability, and answerability. A broad interest becomes a specific topic, which becomes a focused research question that invites analysis rather than description.

What Makes a Research Question Strong vs. Weak?

The clearest test is this: does your question invite description, or does it invite evaluation? Questions beginning with “What is…”, “Describe…”, or “Explain…” tend to generate descriptive essays that struggle on Criterion C. Questions beginning with “To what extent…”, “How effectively…”, “In what ways…”, “Why…”, or “How significant…” tend to generate analytical essays that can score in the upper bands. A strong EE research question is specific enough that a focused essay can genuinely answer it, broad enough that multiple lines of evidence and argument can engage with it, and framed in a way that demands evaluation rather than summary. Writing a compelling hook for your introduction is easier when the research question itself is well-framed — the hook naturally flows from the intellectual tension the question creates.

Subject-Specific Research Question Strategies

Different IB subject groups have different conventions for what a strong research question looks like. In Group 1 (Language and Literature), your RQ should center on a specific text or small set of texts, focusing on a literary technique, theme, or authorial choice and its effect on meaning. In Group 3 (History), your RQ should be focused on a specific event, person, or policy within a defined time period, and should invite historical judgment — causation, significance, extent of change. In Group 4 (Sciences), your RQ should be directly tied to your experimental design or data analysis methodology, and should specify variables, scope, and the type of relationship being investigated. In Group 5 (Mathematics), your RQ should focus on a mathematical problem, pattern, or proof whose exploration can be conducted and written up within the scope of IB-accessible mathematics.

The Complete IB Extended Essay Structure: Title Page to Bibliography

The IB Extended Essay has a specific required structure. Every component below should be included in the order shown. Missing or mislabeled structural elements cost marks under Criterion D (Presentation) — marks that are entirely preventable. Understanding the full structure before you begin writing also helps you plan the essay rationally, allocating appropriate word counts to each section before you start drafting. Essay outline templates are a useful planning tool at this stage — creating a detailed section-by-section plan before writing dramatically improves both argument coherence and efficient word allocation.

1. Title Page

The title page is not included in the 4,000-word count and must contain specific information: the exact title of your EE (not the research question — the title may be the same as the RQ or a more descriptive label), the research question itself, the subject in which the EE is registered, your candidate session number (not your name — IB marking is anonymous), the word count of the essay, and the examination session. Many schools have a specific title page template — check with your IB coordinator before creating your own format.

2. Contents Page

Your table of contents lists every major section and subsection with accurate page numbers. This is more important than many students realize: examiners use the contents page to navigate your essay. A poorly organized or inaccurate contents page is itself evidence of poor organizational discipline, which reads as a Criterion D concern. Update your contents page after every significant editing session — page numbers shift constantly during revision.

3. Introduction

The introduction of an IB Extended Essay serves three distinct functions. First, it provides relevant background context — enough to frame the topic for an educated reader who is not a specialist in the specific area. Second, it states the research question clearly and explains its significance: why does this question matter academically, and what gap in existing understanding does it address? Third, it outlines the structure and methodology of the essay — the examiner should be able to read the introduction and know exactly how you are approaching the question, what sources or methods you are using, and what your essay will argue. The introduction should not begin with “In this essay I will…” — this phrasing is formulaic and signals low Criterion C engagement. Seven methods for writing introductory paragraphs offers more sophisticated approaches that examiners reward.

4. Body — The Core Argument

The body of the Extended Essay should be organized into clearly labeled sections and subsections, each with descriptive headings. Each major section should advance a specific component of your overall argument — not simply cover a topic area. The structural logic should be visible: a reader moving through your sections should be able to see how each one builds on the previous and contributes to your answer to the research question. Within each section, individual paragraphs should follow a claim-evidence-analysis structure rather than a summary structure. The evidence you use should be critically evaluated, not just cited. Topic sentences are the single most important structural tool within body paragraphs — a well-written topic sentence makes the paragraph’s argumentative function immediately clear to the examiner.

A practical word allocation guide for a 4,000-word EE: Introduction (200–300 words), Body sections (3,200–3,400 words across 3–5 major sections), Conclusion (200–300 words). These are approximate — the balance will vary by subject and approach. Science EEs with experimental components may need more space for methodology and results; humanities EEs may dedicate more to close analysis of primary texts or historical evidence. The key is ensuring the body contains substantive analysis rather than extended description or padding. Writing concise sentences is especially important in the EE — the 4,000-word ceiling means every word must earn its place.

5. Conclusion

The conclusion of an IB Extended Essay does three things: it restates the research question and provides your definitive answer to it (not a summary of everything you’ve discussed), it evaluates the strength and limitations of your argument honestly, and it identifies directions for future research or outstanding questions that your essay could not address within its scope. The conclusion must not introduce new information or new arguments — anything that belongs in the body should be there, not saved for the conclusion. The most common conclusion error is restating the body rather than synthesizing it into a clear, direct response to the research question. Your answer in the conclusion should be specific: not “there are many factors affecting X” but “the evidence suggests that Y is the primary driver of X, though the role of Z warrants further investigation given the limitations of available data.” Academic essay mastery applies directly to structuring a conclusion that demonstrates both command and intellectual humility.

6. Bibliography

The bibliography is not counted in the 4,000-word limit but is assessed under Criterion D. It must include every source cited in the body of the essay, formatted consistently in one citation style (MLA, APA, or Chicago). No sources should appear in the bibliography that are not cited in the essay, and no source cited in the essay should be missing from the bibliography. Checking this two-way alignment is part of the citation audit that should occur in the final revision phase. Citation generator tools can reduce bibliography formatting time — but always verify automatically generated citations against the original source, as errors are common. Zotero, a free academic reference manager, is widely used by IB students for tracking sources and generating consistent bibliographies throughout the research process.

7. Appendices (If Required)

Appendices contain supporting material that would interrupt the flow of the essay if included in the main body — raw data, additional charts, survey instruments, interview transcripts, or extended calculations. Appendices are not assessed directly, but they must be labeled, referenced in the main text where relevant, and formatted consistently with the rest of the essay. Do not use appendices to circumvent the word limit by placing substantive analysis there — examiners will identify this and it reflects poorly on Criterion A (methodological transparency).

How to Conduct EE Research and Use the Researcher’s Reflection Space Effectively

Research for the IB Extended Essay differs from research for a standard school essay in one critical way: you are not just finding information about your topic. You are building an evidentiary foundation for an argument. Every source should be selected because it does something specific — it supports a claim, provides data to analyze, presents a competing interpretation, or establishes the academic context that makes your question significant. Research that isn’t connected to your argument is wasted time and wasted words. Finding high-quality academic datasets is particularly relevant for Group 3 (social sciences) and Group 4 (sciences) EEs, where quantitative evidence is often central to the argument.

Where to Find Credible Sources for the Extended Essay

The quality of your sources directly affects your Criterion B score. Top-scoring EEs consistently use peer-reviewed academic sources. The most accessible and reliable databases for IB students include Google Scholar, which indexes academic articles across all disciplines and often links to free PDFs or preprints; JSTOR, which provides access to full-text journal articles in the humanities, social sciences, and sciences (many schools have institutional access); and PubMed, maintained by the US National Library of Medicine, which is essential for biology, chemistry, and health science EEs. Many IB schools also have library access to EBSCO or ProQuest databases. For history EEs, primary source collections — digitized archives, historical newspapers, and government document repositories — are as important as secondary literature. Research tools for academic essays covers the full toolkit in detail.

Organizing Your Research: Systematic Note-Taking

The most common research mistake IB students make is reading extensively without systematic note-taking, then struggling to find the relevant passage when they need it during writing. A reliable system pays dividends across the months of the EE process. A practical approach: create a source-by-source document with four fields for every source you read. Record the full bibliographic information immediately (so you never hunt for it later). Write a 3–4 sentence summary of the source’s main argument. Note specific quotes or data points with page numbers that you may want to use. Record your own critical assessment: what does this source contribute to your argument, what are its limitations, and does it support or complicate your thesis? This system simultaneously builds your bibliography, generates material for your analysis sections, and forces critical engagement with sources from the beginning — directly supporting both Criterion B and Criterion C.

Primary vs. Secondary Research: What the IB Expects

For Group 4 (Sciences) EEs, primary research — original experiments, data collection, or lab work — is common and often expected. The experimental design is part of the methodology assessed under Criterion A. For Group 3 (History, Geography, Economics, Psychology) EEs, primary research may mean using historical documents, census data, or interviews. For Group 1 (Literature) EEs, the primary source is the literary text itself — close reading of the primary text is the research method. Secondary research across all subjects means engaging with existing academic scholarship on your topic. The balance between primary and secondary research varies by subject group, but virtually every EE requires engagement with the secondary academic literature to situate the argument within the field’s existing knowledge. Descriptive vs inferential statistics becomes directly relevant for science and social science EEs that involve data collection and quantitative analysis.

The Researcher’s Reflection Space (RRS) — What It Is and How to Use It

The Researcher’s Reflection Space is one of the most under-prepared components of the EE. It is a structured set of reflective writings maintained by the student across the three mandatory supervisor sessions, and it is assessed as the primary evidence for Criterion E (Engagement — 6 points). The RRS is submitted alongside the final essay but is separate from the 4,000-word body. It must document: an initial reflection on your motivations, approach, and anticipated challenges; an interim reflection on how your research has progressed and how your thinking has developed or changed; and a final reflection after the viva voce on what you learned from the process, including honest evaluation of your methodology’s strengths and limitations.

What examiners look for in the RRS: genuine intellectual challenge, specific description of how thinking evolved, honest acknowledgment of limitations encountered, and evidence that you actively shaped your approach in response to what you discovered. What examiners do not reward: generic positive statements (“I found the research very interesting”), vague claims about hard work (“this essay required a lot of effort”), or superficial reflection that could apply to any essay on any topic. The RRS should read like intellectual autobiography — specific, honest, and analytically engaged with the real problems you encountered in your research process. Reflective essay writing provides the vocabulary and structure for this kind of authentic reflective writing.

The Three Mandatory Supervisor Sessions

The IB requires every EE student to complete at least three formal reflection sessions with their supervisor. These sessions are not optional and are not just administrative checkpoints — they are assessed as part of the Criterion E process through the RRS. The first session (initial planning) typically occurs when you’ve identified your research question and begun preliminary reading. Its purpose is to confirm the direction, discuss the methodology, and give your supervisor a chance to flag obvious problems early. The second session (interim review) occurs when you have substantial research notes or a first draft. Its purpose is to assess progress, deepen the intellectual discussion, and guide revision. The third session (viva voce) occurs after the essay is submitted to the school — the supervisor conducts a brief oral examination of your research process, and this conversation directly informs the Engagement assessment. Students who treat supervisor sessions as pro-forma requirements rather than genuine intellectual conversations consistently underperform on Criterion E.

Writing the Extended Essay: Draft, Revise, and Score Against the Rubric

The first draft of your IB Extended Essay is not the version you submit. This sounds obvious, but many students write their first draft as if it is — then run out of time to revise meaningfully. Professional academic writers consistently report that more time is spent revising than writing the initial draft. For the EE, this is especially true because the revision process is where you align what you’ve written with what examiners are marking — and most first drafts, however good the research behind them, fail this alignment in several places. Revising and editing academic essays covers the discipline required to revise effectively rather than just re-reading and making small surface changes.

Write the Body First

Counterintuitively, the best approach to drafting the Extended Essay is to write the body sections first, before the introduction and conclusion. The body is where your argument actually lives, and you cannot write an accurate introduction — one that correctly describes your approach and previews your argument — until you know what the argument actually is. Many students write an introduction, then find their argument evolved significantly during the body, and have to rewrite the introduction anyway. Write the body sections in order if your argument is sequential; write the strongest or clearest section first if you need momentum. Then write the conclusion — because the conclusion is your direct answer to the research question, and writing it after the body forces you to synthesize rather than plan. Write the introduction last, when you know exactly what it needs to introduce. Writing strong introductory paragraphs is the final step, not the first.

Analytical Paragraph Structure for Criterion C

Every body paragraph in a high-scoring Extended Essay follows a recognizable analytical structure. State a specific claim that advances your argument. Present evidence — a quotation, data point, historical event, experimental result — relevant to that claim. Analyze what the evidence means: explain the connection between the evidence and your claim, and what the implication is for your response to the research question. Acknowledge any complexity, limitation, or counterargument that the evidence raises. Link explicitly back to the research question before moving to the next paragraph. This structure — claim, evidence, analysis, qualification, link — is the blueprint for Criterion C performance. It is not the only way to write analytical paragraphs, but it is the most reliable one for students who are building this skill under time pressure. Informative essay mastery and argumentative essay skills converge here: the EE requires both informational depth and argumentative discipline simultaneously.

Citation Practice Within the Draft

Cite as you write, not after. Adding citations retrospectively is time-consuming and error-prone — you inevitably miss some, or the specific page number you noted from a source has shifted. Use in-text citations consistently from the first sentence you take from a source. Choose your citation style at the beginning and never deviate. For students unfamiliar with academic citation conventions, Scribbr’s citation generator supports MLA, APA, and Chicago styles and is free to use. The bibliography should be maintained as a running document updated every time you use a new source — not assembled at the end from memory. This practice directly protects your Criterion D score. Paraphrasing without plagiarizing is a critical writing skill for the EE — over-reliance on direct quotation, rather than paraphrased and analyzed source material, suggests insufficient engagement with the evidence.

Word Count Management

The 4,000-word ceiling is non-negotiable. IB examiners are instructed to stop reading at 4,000 words. If your conclusion falls on word 4,050, the examiner will not read it — and a missing conclusion costs marks under multiple criteria. Most students write over 4,000 words on their first draft. Cutting is a skill. The most effective editing approach for word reduction is to identify every sentence that is describing rather than arguing, and either cut it or convert it into analysis. Introductory filler phrases (“It is important to note that…”, “This shows us that…”, “As we can clearly see…”) are the most common word-count inflaters and should be cut systematically. Essay word count improvement without padding covers this precisely — for the EE, the skill is cutting strategically rather than adding.

Revision Strategy: Mark Your Own Essay Against the Rubric

The most effective revision technique for the Extended Essay is to apply the IB marking rubric to your own draft as if you were the examiner. Print the five criteria. Read your draft section by section and ask: at which mark band do I think this section would be placed, and what specific evidence in my text supports that assessment? This exercise is uncomfortable but revelatory. Most students discover that sections they thought were analytical are actually descriptive, that their research question is implicitly present in the body but never explicitly answered in the conclusion, or that their bibliography has inconsistent formatting they’d overlooked. Getting this feedback before your supervisor reviews the draft allows you to make substantive improvements rather than just surface edits. Systematic proofreading strategies for both content and format should be the final step before submission.

IB Extended Essay Formatting Requirements: Everything You Need to Get Criterion D Right

Criterion D (Presentation) awards up to 4 points for how well-organized and correctly formatted your Extended Essay is. Four points may be the smallest single criterion, but they are the easiest to secure — and the most embarrassing to lose. Every requirement below is explicit in the IB Extended Essay guide and assessed by every examiner. These are not recommendations. They are requirements. Essay outline and template tools can help maintain structural consistency before and during drafting.

Font, Size, and Spacing

The IB recommends a clear, standard font — 12-point Times New Roman or Arial is the most widely accepted choice. The essay should be double-spaced throughout the main body. Margins should be at least 2.5 cm (approximately 1 inch) on all sides. These standards exist to ensure readability and to create sufficient space for examiner annotations. Many schools provide a specific Word or Google Docs template — use it if available.

Page Numbering

Every page of the Extended Essay must be numbered. The conventional approach is to begin page numbering from the first page of the introduction, with the title page and contents page either unnumbered or numbered in Roman numerals (i, ii). Check your school’s specific template for the preferred convention.

Headings and Subheadings

All major section headings and subheadings must be clearly distinguished from body text — typically through bold formatting, font size increase, or both. Headings should be descriptive rather than generic: “The Economic Impact of Brexit on UK Automotive Supply Chains: 2020–2023” is more useful to the examiner than “Section 2.” The contents page must accurately reflect every heading used in the body, with correct page numbers. An inconsistency between the contents page and the actual essay structure is a Criterion D flag.

Figures, Tables, and Visual Data

All figures, tables, graphs, and images included in the essay body must be numbered sequentially (Figure 1, Figure 2; Table 1, Table 2), given a descriptive title, and referenced in the text immediately before or after they appear. If a figure or table is reproduced from an external source, the source must be cited in the caption. Unsourced figures are both a Criterion D issue and an academic integrity risk. Raw data belongs in appendices, not in the body — unless specific data points are being directly analyzed in the text.

Citation Style Consistency

As discussed in the research section: one citation style, applied consistently throughout. Every in-text citation must correspond to a full bibliography entry. Every bibliography entry must correspond to at least one in-text citation. The bibliography must be alphabetically ordered by author surname (in MLA and APA) or numerically (in some Chicago variants). Citation errors are the most common Criterion D losses — a final citation audit is the single most valuable formatting revision step. Common grammar mistakes should also be addressed in the final formatting review, as language errors — while not directly assessed under Criterion D — create a poor overall impression that can affect examiner perception across criteria.

The Proven Four-Month IB Extended Essay Timeline

The single most reliable predictor of a strong Extended Essay is whether the student started early and followed a structured process. IB examiner data shows students who began planning at least six to eight months before submission consistently scored higher than those who began with three months or fewer. The four-month active writing timeline below assumes you’ve spent at least two months on preliminary topic exploration and research question refinement before the Month 1 activities begin. If you’re working under a tighter deadline, compress the timeline accordingly — but do not compress the revision phase. Prioritizing student tasks effectively is especially relevant here — the EE competes with subject IAs, TOK, CAS, and regular coursework simultaneously.

Month 1: Foundation

Finalize your research question with supervisor approval. Complete your initial RRS entry and hold the first mandatory supervisor session. Begin systematic source collection — aim to have 12–15 solid academic sources identified and summarized by the end of Month 1. Create a detailed structural outline: what each major section will argue, what evidence each will use, and what word count each will receive. The outline is not optional — students who outline thoroughly write faster and revise more efficiently. Essay outline templates provide a starting framework that you can adapt to your specific EE structure and subject requirements.

Month 2: First Draft

Write the full first draft during Month 2. Write body sections first, in the order of your outline. Do not stop to perfect sentences — the goal of a first draft is to get your argument on paper in full, not to produce polished prose. After the body is drafted, write the conclusion, then the introduction. By the end of Month 2, submit your draft to your supervisor for review and hold the second mandatory supervisor session. Your RRS interim reflection should be written at this point, documenting honestly how your research process has evolved and what challenges you’ve encountered.

Month 3: Substantive Revision

Month 3 is where most of the real improvement happens. Apply the IB rubric to your draft systematically — section by section. Identify every descriptive paragraph and convert it to analytical. Check that your conclusion directly and specifically answers your research question. Ensure every claim is supported by cited evidence. Verify your word count. Address every formatting element. Get additional feedback: a subject-knowledgeable peer or tutor, in addition to your supervisor, can identify gaps you’ve become too familiar with to notice. Revising from mediocre to excellent is precisely the work of Month 3 — converting a workmanlike first draft into an essay that genuinely scores at the level you’re targeting.

Month 4: Final Polish and Submission

Month 4 is not the time to change your argument. It is the time to verify, tighten, and finalize. Conduct a full citation audit — every in-text citation matched to a bibliography entry and vice versa. Confirm the word count one final time. Update the contents page to reflect the final version’s page numbers. Read the essay aloud to identify awkward phrasing, unclear argument transitions, and grammatical errors. Complete the final RRS entry reflecting on the viva voce conversation. Submit all materials — the essay, the RRS, and any required forms — by the deadline your supervisor specifies. Balancing multiple academic commitments during this final month requires explicit time-blocking — the EE submission deadline is fixed, and subject exam preparation is concurrent.

Extended Essay Subject-Specific Strategies: Sciences, Humanities, and Social Sciences

While the five assessment criteria apply to all Extended Essays regardless of subject, what “meets the criteria” looks like differs significantly across subject groups. A science EE that scores A in Criterion C will look very different from a literature EE with the same mark. Understanding the subject-specific conventions and expectations is essential for writing an EE that demonstrably meets the criteria in your discipline’s terms. The guidance below is organized by the most commonly chosen subject groups.

Group 1 (Language and Literature) EEs

Literature EEs are among the most commonly written and most variably scored. The research question must center on a specific primary text or small comparative set of texts — not a theme in general. Close reading of the primary text is the core research method, and this means engaging with specific language, structure, and literary devices rather than discussing plot or character in a general way. The secondary literature (academic criticism, literary theory) contextualizes and sharpens the analysis but should not dominate — the essay is about the primary text, and the examiner expects to see textual evidence directly analyzed. Strong Group 1 EEs typically argue a specific, contestable interpretive claim about the text and substantiate it through detailed close reading supported by relevant critical perspectives. Literary analysis essay techniques translate directly to Group 1 EE work — the close reading skills are identical, just sustained at greater length and academic depth.

Group 3 (Individuals and Societies) EEs — History, Economics, Geography, Psychology

History EEs are among the most common Group 3 choices. The strongest History EEs focus on a specific event, decision, or period within a defined geographical and temporal scope, argue a historical judgment (about causation, significance, extent of change, or turning points), and use both primary and secondary sources with explicit source evaluation. Source evaluation in the History EE is not a separate exercise — it should be embedded within the analysis itself, demonstrating that you understand the provenance, purpose, and limitations of your evidence. For economics EEs, theoretical frameworks (market failure, comparative advantage, supply-demand models) must be correctly applied and their explanatory limitations honestly assessed. For psychology EEs, research methodology and the principles of ethical research design are assessed under Criterion A and must be addressed explicitly. Psychology research methods provide the foundation for understanding what makes a psychology EE methodologically sound.

Group 4 (Sciences) EEs — Biology, Chemistry, Physics, Environmental Systems

Science EEs are unique in that they typically involve original experimental data — data collected by the student — as the primary evidence. The experimental design is assessed under Criterion A, and its rigor, feasibility, and appropriateness to the research question are all evaluated. A common error in Group 4 EEs is describing the experimental procedure in detail but failing to analyze the data critically — explaining what the results show rather than what they mean for the research question. Science EEs should also discuss the limitations of the experimental design honestly: sources of error, confounding variables, and how findings might change with larger sample sizes or different conditions. This honest limitation analysis is precisely what distinguishes upper-band science EEs from lower-band ones. Scientific method essay writing covers the structural conventions that apply directly to science EE write-ups.

Group 5 (Mathematics) EEs

Mathematics EEs have a specific requirement that distinguishes them from all others: they must include original mathematical work, not just a review of existing mathematics. The research question should focus on a mathematical problem, pattern, or proof whose investigation involves genuine mathematical exploration beyond what appears in the standard IB curriculum. The essay should present mathematical arguments clearly, with appropriate notation, definitions, and step-by-step logical development. Student-conducted calculations and derivations are the primary evidence — the essay should walk the reader through the mathematical reasoning rather than just presenting results. Mathematics EEs are most successfully executed when the research question is genuinely curiosity-driven, rather than chosen for apparent impressiveness — the mathematical exploration should feel intellectually motivated.

Frequently Asked Questions: IB Extended Essay