GCSE Combined Science (Trilogy)


In KS4 students study either AQA GCSE Combined Science (Trilogy) or AQA single sciences (see GSCE biology, GCSE chemistry and GCSE physics pages). Combined science is taken by the majority of students. It builds on the Key Stage 3 curriculum and prepares students for further study of science in a range of KS5 courses. Combined science encourages students to explore, explain, theorise and model in science and develops student’s ability to think critically about scientific evidence. Pupils study a range of topics in biology, chemistry and physics giving them well rounded knowledge which enables them to explain and question the world around them. Practical skills are embedded in the course as students complete 21 required practicals which develop their ability to follow methods, collect data, analyse data and evaluate practical procedures.


Combined science aims to equip students with understanding of each of the three science disciplines: biology, chemistry and physics. After sitting the exams, students will attain two GCSE grades (9-1).

How is the course assessed?

There are six papers: two biology, two chemistry and two physics.


Students will either sit Foundation (grade 1-1 to 5-5) or Higher (grade 4-3 to 9-9) exams. Students cannot mix their tier of entry, they have to sit either Higher or Foundation for all six of the exams.


Each exam comprises:

  • Written exam: 1 hour 15 minutes
  • Foundation or Higher Tier
  • 70 marks
  • 16.7% of GCSE
Biology Topics Chemistry Topics Physics Topics
  • Paper 1
    • B4 Bioenergetics
    • B3 Infection and response
    • B2 Organisation
    • B1 Cell biology
  • Paper 2
    • B5 Homeostasis and response
    • B6 Inheritance, variation and evolution
    • B7 Ecology
  • Paper 1
    • C1 Atomic structure and the periodic table
    • C2 Bonding, structure and the properties of matter
    • C3 Quantitative chemistry
    • C4 Chemical changes
    • C5 Energy changes
  • Paper 2
    • C6 The rate and extent of chemical change
    • C7 Organic chemistry
    • C8 Chemical analysis
    • C9 Chemistry of the atmosphere

    • C10 Using resources

  • Paper 1
    • P1 Energy
    • P2 Electricity
    • P3 Particle model of matter
    • P4 Atomic structure
  • Paper 2
    • P5 Forces
    • P6 Waves
    • P7 Magnetism and electromagnetism


Equipment that students must bring to every science lesson:

  • A scientific calculator

  • Your science exercise book (green for biology, blue for chemistry and red for physics)

In Y11, all students must bring their Knowledge Organisers to all lessons. These will be provided by school and must be returned at the end of year 11.


Homework and learning outside of the classroom

Homework will be set once a fortnight per teacher (this will take approximately 1 hour). Homework tasks will be a combination of online homework set on www.senecalearning.com, past exam paper question and consolidation tasks from lessons.


Extra curricular activities

  • After school drop-in Thursday

  • Leeds University visitors

KS4 Science

KS5 Science

Allerton High School
King Lane, Leeds
West Yorkshire LS17 7AG
ssat ssat Leading Edge Healthy Schools Ofsted