The three-rung ladder: describe -> analyse -> evaluate
These are not three styles you can pick freely — they are a hierarchy, and each rung is worth more than the one below it.
Almost every mark you lose in 8021 that is not a simple grammar slip comes from operating on the wrong rung of one ladder. Master the ladder and you control your own grade.
Rung 1 — DESCRIBE (what it is / what happened). Description states the facts. It tells the reader what something is, what it looks like, or what happened. It is necessary — you cannot analyse a feature you have not first identified — but on its own it sits in the lower bands, because anyone who can read can describe.
Rung 2 — ANALYSE (how / why it works, what it shows). Analysis examines something in detail to show its meaning or significance. It answers 'how does this work?' and 'why does this matter / what does this show?'. It explains the mechanism — the chain of cause and effect that connects a feature to its result, or an example to the point it proves.
Rung 3 — EVALUATE (a supported judgement of how good / effective / valid). Evaluation goes one step further: it makes a judgement about quality, effectiveness, validity or value, and supports that judgement. It answers 'how good / effective / convincing is this — and why?' by weighing strengths against weaknesses against a stated standard.
Take one tiny example — a writer's use of a short, blunt sentence: 'It must stop.'
- Describe: 'The writer uses a short, three-word sentence.' (True, but it earns almost nothing.)
- Analyse: 'The abruptness of the three-word sentence mimics the finality of a command, jolting the reader after several long, flowing sentences and forcing the demand to land with sudden force.' (Now we have HOW and WHY — AO2.)
- Evaluate: 'This is highly effective: coming after a paragraph of measured reasoning, the curt sentence converts argument into urgency, so the reader feels compelled rather than merely informed — though if every sentence were this blunt the effect would be lost, which is why its rarity is precisely what makes it work.' (A supported JUDGEMENT, with a criterion — effectiveness — and a weighed limitation.)
- Describe = what it is / what happened (lower bands on its own).
- Analyse = HOW / WHY it works, what it shows or means (AO2).
- Evaluate = a supported JUDGEMENT of how good / effective / valid (top of AO2).
- Each rung is worth more than the one below; you must climb past description.
- Same feature, three levels: identify it -> explain its effect -> judge how effective it is.