Every A-Level Economics answer is marked against three assessment objectives. Most students can name them. Very few can tell which one they are writing at any moment.
That is the problem this guide fixes.
One small note on spelling: you will often see these written as A01, A02 and A03 with a zero instead of the letter O. It means the same thing. The exam boards write AO1, AO2 and AO3.
The three objectives in one table
| Objective | Name | What it asks | What it sounds like |
|---|---|---|---|
| AO1 | Knowledge and understanding | Do you know the economics? | "A subsidy is..." |
| AO2 | Analysis | Can you explain how it works? | "...which lowers costs, so supply shifts right, so price falls..." |
| AO3 | Evaluation | Can you judge how strong the analysis is? | "...however, this depends on elasticity, because..." |
In EconIQ's 20-mark practice, they carry 4, 10 and 6 marks. Analysis is the biggest section, which surprises most students.
AO1 — Knowledge
AO1 is definitions, terms, and correct use of economic ideas.
What earns marks:
- Defining key terms from the question
- Using correct economic vocabulary
- Stating a relevant theory or model
What does not earn more marks:
- Writing a long history of the topic
- Repeating the question
- Explaining the theory in unnecessary detail
Example:
Market failure occurs when the free market allocates resources inefficiently, creating a deadweight loss.
That is one clean AO1 point.
AO2 — Analysis
AO2 is the chain: how one thing causes another, and then another.
You are not listing effects. You are connecting them.
List (weak AO2):
A tax raises prices. It reduces consumption. It raises government revenue. It can cause black markets.
Chain (strong AO2):
A tax raises the firm's cost of production, so supply shifts to the left. The market price rises, which reduces the quantity demanded. Because consumption falls, the negative externality is reduced and the deadweight loss becomes smaller.
Notice the difference. The chain explains how each step happens.
A good chain usually has three or four connected steps. Use words like:
- therefore
- which means
- as a result
- this leads to
AO3 — Evaluation
AO3 is judgement. You look at your own analysis and ask: is this always true? How big is the effect? What does it depend on?
What earns marks:
- Explaining why something is a limitation
- Explaining under what conditions your analysis holds or fails
- Weighing the arguments and making a decision
What does not earn marks:
- "However, it depends on the situation." (No reason given.)
- "On the other hand, some people disagree." (No economics.)
- A conclusion that just repeats both sides.
Example:
However, the size of the effect depends on the price elasticity of demand. If demand is inelastic, consumers do not reduce consumption much when the price rises, so the tax raises revenue but does little to reduce the externality.
That is real evaluation, because it explains how the condition changes the outcome.
The same idea at each level
Here is the same economics written three ways.
AO1:
A minimum wage is a legal minimum price for labour.
AO2:
A minimum wage set above the equilibrium wage raises the cost of hiring workers, so firms demand fewer workers, which can create unemployment.
AO3:
However, whether unemployment rises depends on the elasticity of demand for labour. If workers are highly skilled and difficult to replace, firms may keep hiring them, so the job losses are small.
Same topic. Three different skills. Three different sets of marks.
Evaluating a minimum wage (AO3 in practice)
"Evaluate a minimum wage" is one of the most common 20-mark questions, so it is worth seeing what AO3 looks like on a real topic.
The evaluation marks come from asking what the outcome depends on:
- Elasticity of demand for labour. If firms cannot easily replace workers, demand for labour is inelastic, so higher wages cost them more but cause few job losses. If workers are easy to replace, employment falls by more.
- How far the wage is set above equilibrium. A small rise above the market wage may barely change hiring. A large rise makes labour much more expensive and job losses more likely.
- Skill level. Skilled workers are harder to substitute, so their employment is usually less affected than that of low-skilled workers.
- Firm costs and prices. Higher wage bills raise costs of production. Firms may respond by raising prices, cutting hours, reducing training or replacing workers with capital instead of making redundancies.
- Enforcement. Where a large informal sector exists, some firms pay below the legal minimum, so the policy changes little in practice.
- Time period. In the short run firms are locked into contracts and hiring is hard to change. In the long run they can substitute capital for labour, so job losses can grow.
A strong evaluation picks two or three of these and explains how each one changes the outcome:
However, the effect on employment depends mainly on the elasticity of demand for labour. If the minimum wage is only slightly above the equilibrium wage and workers are skilled, firms cannot easily replace them, so employment barely falls. The policy then raises pay for low earners with little job loss. If the rise is large and workers are easily replaced, firms may cut hours or substitute capital, and unemployment rises.
Then decide:
On balance, a modest minimum wage is likely to raise the pay of low earners with only a small employment effect, but a large increase in a labour market with many low-skilled workers is likely to cost jobs.
Notice there is no new theory here. The AO1 and AO2 are already done. AO3 is only about conditions and judgement.
The most common mistake
Students mix the objectives inside one paragraph and assume they have "covered everything".
For example, they write a definition, then an opinion, then another definition, and call it evaluation.
A cleaner approach is to think in three blocks:
- Know it — define the terms.
- Explain it — build the chains.
- Judge it — evaluate and conclude.
You do not need headings in the exam, but the examiner should be able to see all three.
A quick self-check
Read your last paragraph and ask:
- Am I describing? That is AO1.
- Am I explaining how it works? That is AO2.
- Am I judging how strong it is? That is AO3.
If one of the three is missing, you are leaving marks on the table.
How to improve fast
Practise writing one paragraph of each type on the same question:
- One AO1 definition.
- One AO2 chain with three steps.
- One AO3 evaluation with a condition.
Then check which one is weakest. Most students discover it is AO3, because nobody has taught them what evaluation actually looks like.
EconIQ separates your score into AO1, AO2 and AO3, so you can see exactly which skill is costing you marks instead of guessing.