What is a markband?

A markband is the IB's equivalent of what UK students call a "levels of response" mark scheme — but with an important difference in how it works in practice. Where a GCSE or A-Level mark scheme typically lists bullet-pointed criteria that answers must hit to reach each level, an IB markband describes the overall character of a response in a paragraph of prose.

An examiner reads your answer in full, decides which band description most closely matches the quality of what they have read, then awards a mark within that band's range. There is no checklist. No individual points to tick off. The examiner is making a holistic judgement.

Why this matters for how you write

Many students who move from GCSE or A-Level to IB (or who compare notes with friends doing A-Levels) try to approach IB essays the same way — identifying the mark scheme points and making sure to cover them. This is the wrong strategy for IB extended response questions.

Because the markband is holistic, the quality of your argument matters more than its coverage. An answer that develops two points well, with specific evidence and genuine evaluation, will outperform an answer that skims across five points superficially. The examiner is not counting; they are reading.

The structure of a markband

Most IB extended response markbands follow the same general structure across subjects. Here is an example based on a 10-mark IB History essay question:

9–10 marksTop band
Responses demonstrate a very good understanding of the demands of the question. Answers are well structured and coherent. Arguments are developed and supported with accurate and relevant evidence. There is clear and effective evaluation.
7–8 marksUpper band
Responses demonstrate a good understanding of the demands of the question. Answers are structured and mostly coherent. Arguments are developed and supported with mostly accurate evidence. Evaluation is present but may be limited in scope.
5–6 marksMiddle band
Responses demonstrate an adequate understanding of the demands of the question. There is some structure but it may be inconsistent. Arguments are made with limited development. There is little or no evaluation.
3–4 marksLower band
Responses demonstrate a basic understanding. Statements are made but are not developed into arguments. Little or no attempt to structure the response.
1–2 marksMinimal
Responses show limited understanding. Mostly description with no analysis or evaluation.

The words that separate bands

Reading markbands carefully, the same vocabulary shift appears across subjects. These are the words that distinguish each band from the one above it:

  • Bottom → middle: "statements" become "arguments." You stop asserting things and start reasoning about why they are true.
  • Middle → upper: "limited" becomes "present." Evaluation appears. You acknowledge counterarguments or limitations.
  • Upper → top: "good" becomes "very good." "Present but limited" becomes "clear and effective." Your evaluation is no longer a gesture — it is genuinely analytical and reaches a reasoned judgement.

This tells you exactly where to focus your effort. Most students who plateau at the 6–7 range are producing well-structured arguments but not evaluating effectively. Adding evaluation — not as a separate paragraph tagged on at the end, but woven into your analysis throughout — is the single highest-leverage improvement you can make.

Markbands and subject-specific mark schemes

Generic markbands describe quality in general terms. After each exam session the IB also publishes a subject-specific mark scheme (called a "marking notes" or "clarification notes" document) that lists the specific content, arguments, and examples examiners expected to see in that year's questions. This is the IB equivalent of indicative content in a UK mark scheme.

Studying both together gives you the full picture: the markband tells you what quality of thinking is required; the clarification notes tell you what content is expected at that quality level.

How to use markbands in revision

  1. Write an answer under timed conditions — do not look at the markband until you are done.
  2. Read the markband top-down — start at the highest band and ask honestly: does my answer meet this description? If not, move down until you find the band that fits.
  3. Identify the specific gap — usually it is evaluation (missing or superficial), structure (arguments jump around), or evidence (too vague or too broad). Name it precisely.
  4. Rewrite targeting that gap only — do not rewrite the whole answer. Find the section that failed and improve it. This builds specific skills faster than writing new answers from scratch each time.
  5. Read the clarification notes for that question — check whether you covered the expected content at the quality your band required. This reveals knowledge gaps as well as skills gaps.

The most common mistake IB students make

Writing evaluation as a separate paragraph at the end of an essay: "In conclusion, the above factors were significant, however some historians argue that..." This is the hallmark of a 6–7 answer. Examiners call it "evaluation by afterthought."

Top-band answers integrate evaluation throughout. After developing each argument, the student immediately considers its significance, limitations, or interaction with other arguments — then moves on to the next. The conclusion then synthesises what the evaluation across the essay has established, rather than introducing evaluation for the first time.