Primary Science Assessment: What Should We Actually Be Looking For?

When we assess maths, the evidence can often feel fairly clear. Can a pupil use the method? Can they answer the question correctly?

Science can feel a little less straightforward.

A child might remember the names of the planets but struggle to explain why we have day and night. They might know the parts of a plant but be unable to predict what would happen if that plant didn't receive enough light. They might confidently use scientific vocabulary without fully understanding what it means.

So, when we're assessing primary science, what should we actually be looking for?

The answer is about much more than remembering facts.

1. Scientific knowledge

Of course, knowledge matters.

Children need to build up an increasingly secure body of scientific knowledge as they move through primary school.

Depending on their year group, this might include knowledge about plants, animals, materials, forces, light, electricity or Earth and space.

Assessment can help us establish whether children remember this essential knowledge - but it's worth looking beyond whether they can recall an isolated fact.

Can they use that knowledge when answering a question?

Can they make connections between different ideas?

Can they apply what they know to a new situation?

That's often where we begin to see the difference between remembering something and really understanding it.

2. Understanding, not just recall

Consider these two questions:

“What does a plant need to grow?”

and

“What do you think would happen to a plant kept in a dark cupboard? Explain your answer.”

Both involve knowledge about plants, but the second tells us considerably more about the child's understanding.

This is why good science assessment should include opportunities for children to explain, predict, compare and apply their knowledge rather than simply recall it.

A pupil who can repeat a scientific fact may not necessarily understand the concept behind it.

3. Misconceptions

One of the most valuable things assessment can uncover is a misconception.

Children arrive in the classroom with their own ideas about how the world works — and some can be surprisingly difficult to shift.

They might think that:

• all metals are magnetic;
• heavier objects always fall faster;
• plants get their food from the soil;
• the Sun moves around the Earth;
• bigger magnets are always stronger.

A simple right-or-wrong question may not reveal these misunderstandings.

Asking pupils to explain why they have chosen an answer can.

Once a misconception has been identified, teachers can address it through discussion, demonstration or practical investigation.

4. Scientific vocabulary

Science introduces children to a huge range of subject-specific vocabulary.

Words such as habitat, evaporation, conductor, force, transparent, pollination and vertebrate gradually become part of children's scientific language.

But recognising a word isn't necessarily the same as understanding it.

Can pupils use the vocabulary correctly when explaining an idea?

Can they distinguish between similar terms?

Can they apply the vocabulary in a different context?

Assessment can help identify where children understand a concept but lack the language to explain it - or where they can remember the terminology without fully understanding the science behind it.

5. Working scientifically

Primary science isn't only about what children know. It's also about how they investigate and explore scientific questions.

When assessing practical work, teachers might look at whether pupils can:

• ask relevant scientific questions;
• make sensible predictions;
• decide what they need to observe or measure;
• use equipment appropriately;
• record their findings;
• identify patterns;
• use results to draw conclusions;
• suggest what their results might mean.

Much of this assessment can happen through observation and conversation during ordinary science lessons.

Watching how children approach an investigation can sometimes reveal things that a written test cannot.

6. What children have remembered over time

A pupil answering a question correctly immediately after it has been taught doesn't necessarily mean that learning will stick.

That's why it's useful to revisit previous science learning throughout the year.

Short retrieval activities can be particularly helpful here.

Try including a few questions from earlier topics alongside current learning.

Can children still remember what they learned about states of matter several weeks later? Can they apply their knowledge of forces when it appears in a different context?

This gives you a much clearer picture of what has become secure long-term knowledge.

7. Patterns across the class

When marking an assessment, it's easy to focus on individual scores.

But one of the most useful things to look for is patterns.

If a large number of pupils answer the same question incorrectly, ask why.

Was the concept misunderstood?

Was particular vocabulary causing difficulty?

Is there a curriculum objective that needs revisiting?

Looking at assessment in this way turns it into a planning tool.

Rather than simply recording how pupils performed, you can use the information to decide what needs to happen next.

So, what should science assessment tell us?

Ideally, assessment should help us answer questions such as:

What do pupils know?

What do they understand?

What can they apply?

What have they misunderstood?

What have they remembered over time?

What can they do scientifically?

And perhaps most importantly:

What do I need to teach or revisit next?

Assessment becomes much more valuable when we stop thinking of it simply as a way of generating a score and start using it to build a fuller picture of children's scientific understanding.