IB Guide

What is the IB Extended Essay? A Complete Guide

Everything you need to know about the IB Extended Essay: what it is, how to choose a topic, structure, assessment criteria, timeline, and expert tips for success.

By AatiCademy Team·10 July 2026·10 min read

The Extended Essay is the component of the IB Diploma that most intimidates students — and most impresses universities. It's a 4,000-word independent research paper that demonstrates your daughter can think critically, research independently, and communicate her findings. This guide explains everything she needs to know.

If your daughter is starting the IB Diploma Programme, the Extended Essay (EE) will be one of the most significant academic challenges she faces. But it's also one of the most rewarding. A well-executed EE develops research skills, critical thinking, and intellectual independence — skills that universities and employers value highly.

What is the Extended Essay?

The Extended Essay is a 4,000-word independent research paper that all IB Diploma students must complete. It's one of the three core components of the IB Diploma (alongside Theory of Knowledge and CAS). Students choose a subject, formulate a research question, conduct independent research, and write up their findings.

The EE is completed over approximately 40 hours of independent work, spread across the two years of the IB Diploma. Each student is assigned a supervisor (a teacher at their school) who provides guidance — but the research and writing are entirely the student's own.

The EE is graded A-E by external IB examiners. Together with the Theory of Knowledge essay, it contributes up to 3 bonus points toward the IB Diploma score (out of 45 total). While this seems small, these points can be the difference between meeting and missing university offer conditions.

Choosing a Subject for Your Extended Essay

Your daughter can write her EE in any IB subject she studies — and in some cases, in a subject she doesn't study but has a strong interest in. The most popular EE subjects include:

  • History: Analysis of historical events, causes, consequences
  • Physics: Experimental investigation or theoretical analysis
  • Chemistry: Experimental investigation of a chemical phenomenon
  • Biology: Experimental or field-based biological investigation
  • English A: Literary analysis of one or more texts
  • Economics: Analysis of an economic issue using primary/secondary data
  • Psychology: Investigation of a psychological phenomenon

Key advice: Choose a subject your daughter genuinely enjoys. She'll spend 40+ hours on this essay — passion for the topic makes the difference between a chore and a pleasure.

Formulating a Research Question

The research question is the single most important element of the EE. A good research question is:

  • Specific: Narrow enough to answer in 4,000 words
  • Analytical: Requires analysis, not just description
  • Researchable: Feasible to investigate with available resources
  • Original: Not a question that has been answered a thousand times
  • Subject-appropriate: Fits the methodology of the chosen subject

For example, “What caused World War II?” is too broad. “To what extent did the Treaty of Versailles contribute to the rise of Nazi Germany between 1919 and 1933?” is specific, analytical, and researchable.

Structure of the Extended Essay

A well-structured Extended Essay includes:

  • Title page — subject, research question, word count
  • Contents page — with page numbers
  • Introduction (~300-400 words) — context, research question, methodology
  • Body (~3,000-3,200 words) — argument, evidence, analysis
  • Conclusion (~300-400 words) — answer to research question, limitations, implications
  • Bibliography — all sources cited (not included in word count)
  • Appendices — supplementary material (not included in word count)

The body should be structured as a logical argument — not a collection of facts. Each paragraph should build on the previous one, leading the reader toward the conclusion.

Assessment Criteria

The Extended Essay is assessed against five criteria (total 34 marks, converted to A-E grade):

  • Criterion A: Focus and Method (6 marks) — research question clarity, methodology appropriateness
  • Criterion B: Knowledge and Understanding (6 marks) — subject-specific understanding, source quality
  • Criterion C: Critical Thinking (12 marks) — analysis, evaluation, argument development
  • Criterion D: Presentation (4 marks) — structure, formatting, academic conventions
  • Criterion E: Engagement (6 marks) — reflection on the research process (assessed via RPPF)

Criterion C (Critical Thinking) is worth the most marks — 12 out of 34. This is where many students lose marks. They describe their research but don't analyze it critically. The EE is not a report — it's an argument.

Timeline: When to Do What

IB Year 1, Term 2: Choose subject, brainstorm topics, formulate research question

IB Year 1, Term 3: Conduct research, read sources, create outline

Summer break: Write first draft (aim for 3,500+ words)

IB Year 2, Term 1: Revise based on supervisor feedback, refine argument

IB Year 2, Term 2: Final edits, check word count, format bibliography

IB Year 2, Term 3: Submit final EE + complete RPPF reflections

5 Tips for a Top-Scoring Extended Essay

  1. Start early. Procrastination is the #1 enemy of the EE. Begin brainstorming in Term 2 of Year 1.
  2. Choose a narrow research question. Broad questions lead to superficial essays. Narrow questions allow depth.
  3. Read widely before writing. Spend at least 30% of your time on research before writing a single paragraph.
  4. Write analytically, not descriptively. Every paragraph should advance your argument. Don't just list facts.
  5. Reflect throughout. The RPPF (Reflections on Planning and Progress Form) is worth 6 marks. Don't leave it to the last minute.

How AatiCademy Can Help with the Extended Essay

Our female IB tutors have supervised and supported dozens of Extended Essays across subjects. We help students:

  • Choose the right subject and topic
  • Formulate a focused, analytical research question
  • Structure the essay for maximum marks on Criterion C
  • Develop critical thinking skills (not just description)
  • Write meaningful RPPF reflections
  • Format the essay to IB academic conventions

Important: We don't write the EE for your daughter. We coach her through the process — helping her develop the skills to produce her best work. The essay remains entirely her own.

FAQ

Frequently asked questions

How long is the IB Extended Essay?

The Extended Essay must be between 3,900 and 4,000 words. The word count does not include the contents page, footnotes, bibliography, or appendices. Exceeding 4,000 words results in penalties, so staying within the limit is important.

How much is the Extended Essay worth?

The Extended Essay is worth approximately 1.5% of your total IB Diploma score. Combined with TOK, it can contribute up to 3 bonus points (out of 45 total). While this seems small, these bonus points can be the difference between university acceptance and rejection at competitive institutions.

When should I start my Extended Essay?

Ideally, start brainstorming topics in the second term of IB Year 1 (Grade 11). Begin research by the end of Year 1. Write the first draft over the summer between Year 1 and Year 2. Finalize in the first term of Year 2 (Grade 12). Starting early reduces stress and produces better work.

Can I get help with my Extended Essay?

Yes — and you should. Your school assigns a supervisor who provides guidance (typically 3-5 hours of consultation). However, many students also work with external tutors for additional support. At AatiCademy, our IB tutors help students choose topics, structure arguments, refine research questions, and polish final drafts — while ensuring the work remains the student's own.

Not sure which is right for her?

Get a personalized recommendation in 5 minutes

Take our free diagnostic quiz. Your daughter answers a few questions, and you receive a personalized academic report — including which curriculum path suits her best. No payment, no commitment.