Science is one of the three core subjects at KS2, yet it’s the one parents tend to know least about — partly because there’s no separate science SAT in Year 6, which can make it feel less urgent than maths and English. But science underpins critical thinking, observation skills and understanding of the world that matter throughout secondary school and beyond.
This guide explains exactly what your child learns across Years 3–6, how science is assessed at KS2, and the simplest ways to support science learning at home.
How KS2 Science Is Structured
KS2 science is organised around three broad strands:
All children also develop Working Scientifically skills throughout KS2 — planning investigations, recording results, drawing conclusions and evaluating evidence. These aren’t separate lessons; they’re built into every topic.
What’s Covered in Each Year Group
Year 3 (age 7–8)
- Biology: Plants — parts of a plant, requirements for growth; animals including humans — nutrition, skeletons and muscles
- Chemistry: Rocks — types of rock, fossils, soils
- Physics: Forces and magnets — friction, magnetic attraction/repulsion; light — sources, shadows
Year 4 (age 8–9)
- Biology: Living things and their habitats — classification; animals including humans — digestion, teeth, food chains
- Chemistry: States of matter — solids, liquids and gases; evaporation and condensation
- Physics: Electricity — circuits, switches, conductors and insulators; sound — vibration, pitch, volume
Year 5 (age 9–10)
- Biology: Living things — life cycles of plants and animals; animals including humans — changes in humans (puberty)
- Chemistry: Properties and changes of materials — dissolving, filtering, reversible and irreversible changes
- Physics: Forces — gravity, air resistance, water resistance, levers and pulleys; Earth and space — solar system, day/night, seasons
Year 6 (age 10–11)
- Biology: Living things — classification systems; animals including humans — circulatory system, diet, drugs, exercise; evolution and inheritance
- Physics: Light — how we see, refraction, colour; electricity — circuit diagrams, changing components
How Is Science Assessed at KS2?
Science was removed from the Year 6 SAT tests in 2009. Your child’s scientific knowledge is now assessed by their class teacher throughout Year 6, based on whether they are working at the expected standard across all the topics. This assessment is reported as “working at the expected standard” or “working above/below the expected standard” in school reports. The standard is nationally defined but the assessment is entirely by the teacher — there is no external test.
There are also national sample assessments in science taken by a small number of schools each year — but most children will never sit them.
What this means for parents: Science doesn’t carry the exam pressure of maths and English, but it’s still a core subject that affects school reports and secondary school readiness. Regular revision of science vocabulary and concepts — even 10 minutes a week — keeps children confident and prepared without the stress of test preparation.
How to Support Science at Home
Science is one of the easiest subjects to bring into family life without it feeling like schoolwork:
- Talk about the world: why is the sky blue? How do plants grow? What makes a magnet work? Natural curiosity conversations reinforce science thinking.
- Watch documentaries together: nature programmes, space documentaries and anything featuring David Attenborough directly covers KS2 biology and physics topics.
- Experiment at home: simple kitchen experiments (mixing vinegar and bicarbonate of soda, making shadows, filtering water) make abstract concepts concrete.
- Practise science vocabulary: knowing the correct words for concepts — photosynthesis, evaporation, gravity, conductor — is a large part of what teacher assessment looks at.
In Wales, science is part of the “Science and Technology” Area of Learning under the Curriculum for Wales 2022. Topics are broadly aligned with those in England, though the Welsh curriculum organises them differently. There are no end-of-KS2 tests for science in Wales either — teacher assessment applies here too. Encouraging curiosity, discussion and practical exploration is the most effective home support in both countries.
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