20 Sep ESS Extended Responses: A 15-Minute Practice Routine
A clear ESS extended response addresses the actual question, uses accurate knowledge and develops reasoning supported by relevant evidence. For an evaluative task, the conclusion should reflect the argument and its limitations. No paragraph formula guarantees a particular mark.
Check the course and question first
For the ESS course first assessed in 2026, Paper 2 Section B consists of structured essay questions. At SL, students answer one 20-mark structured essay question from a choice of two; at HL, they answer two from a choice of three. The marks are divided between parts. Do not assume every extended response is a stand-alone 10-mark question. Check the actual paper, your level and the applicable markscheme.
Older papers can provide useful conceptual practice, but their question formats and mark allocations may differ. Use the official ESS guide, first assessment 2026, and specimen materials for your course.
An optional 15-minute practice exercise
This routine develops one response or selected essay part. It is a study exercise, not an official time allowance. In a full paper, allocate time according to the marks and total duration, with time for reading and checking.
- Minutes 0–2: identify the command term, topic, scope and marks. Note what the question requires and what would be irrelevant.
- Minutes 2–4: plan the main points and evidence. For evaluation, identify a relevant strength, limitation or condition and a provisional judgement.
- Minutes 4–12: develop the response. Explain each point and how the evidence addresses the question. Add another paragraph when it contributes different reasoning.
- Minutes 12–15: check accuracy, relevance, units and the conclusion. Remove repetition and unsupported claims.
Adapt the routine after reviewing your work. Some students need more concept preparation before timed writing; others benefit from shorter drills on individual paragraphs.
Choose a structure that fits the command term
- Explain: develop reasons or mechanisms. A list of advantages and disadvantages may not answer the task.
- Discuss: provide a balanced review of relevant arguments or factors and support opinions or conclusions with evidence.
- Evaluate: weigh strengths and limitations, considering their significance in context.
- To what extent: develop a supported position on the degree to which a claim holds.
Balance means fair consideration of relevant evidence, not exactly equal word counts for two sides. Some evidence may deserve greater weight. Linking words such as “however” help organise writing, but the reasoning after them matters.
A practice example: protected areas
Original practice prompt: Evaluate the effectiveness of protected areas as a strategy for conserving biodiversity.
The illustration below models reasoning without claiming a particular score. It is not an official IB answer or markscheme, and it does not supply a verified case study.
Opening: Protected areas can restrict habitat conversion and provide space for species, but their effectiveness depends on management and the pressures affecting the ecosystem.
Developed argument: Restrictions on damaging activities may protect breeding sites and food resources. A strong response would support this claim with a documented example, identifying the protected area, management action, period and relevant ecological evidence. Legal designation alone is not evidence that a population has recovered.
Limitation and conditions: Inadequate enforcement, pressure outside the boundary or barriers to movement may reduce effectiveness. Community involvement, funding and connections between habitats can affect outcomes. Explain the mechanism and use evidence rather than assuming every park has the same strengths or problems.
Supported judgement: Protected areas can contribute to biodiversity conservation when management addresses the actual threats. Evaluate success against a stated aim, such as habitat retention or species recovery, and acknowledge what the available evidence cannot establish.
Develop your own sourced case study before using this approach in practice. Do not invent a percentage, species trend or conservation result to make an answer sound specific.
Review your response using evidence
- Does each paragraph address the question?
- Are the environmental concepts and case details accurate?
- Have you explained why the evidence supports the point?
- Where evaluation is requested, have you weighed limitations or conditions?
- Does the judgement follow from the argument?
These questions help diagnose weaknesses. They do not replace the relevant markscheme or establish that an answer belongs in a particular band. Marking considers the response as required by that question; there is no universal deduction for a missing linking word or fixed number of case studies.
Build the next practice task from feedback
Keep an error log with the question, the difficulty and the change to try. If a response lacks evidence, work on one documented example. If the explanation is incomplete, practise a chain of reasoning. If timing is the difficulty, review where the time went before shortening every answer.
Continue with ESS command terms and appropriate current-course practice papers. Your IA and Extended Essay have separate requirements; do not apply an exam essay template as their assessment framework.
Practise ESS writing with focused support
Bring one question and your own response to a lesson with Marija Maletz, ESS teacher, examiner and tutor. Discuss relevance, evidence and reasoning, then choose a practical next step for independent practice.
Request a FREE 20-minute trial lesson. Include your SL or HL level, exam session and the task you find difficult. See current regular lesson prices. Your assessed research, decisions and writing remain your own.
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