A Level Science

A Level Science Chapter Weightage 2026-27

Topic-wise Marks Distribution — Physics, Chemistry, Biology & Mathematics

Complete guide to chapter weightage for A Level Science. Understand the marks distribution to plan your final exam preparation effectively. Your complete guide to A Level Science chapter weightage.

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A Level Science Weightage Overview 2026-27

Subject	Paper 1	Paper 2	Paper 3	Paper 4	Paper 5
Physics	15%	23%	15%	38%	N/A
Chemistry	15%	23%	15%	38%	N/A
Biology	15%	23%	15%	38%	N/A
Mathematics	17%	11%	17%	11%	11%

Note: Paper 4 (Advanced Theory) has the highest weightage for Science subjects. Mathematics weightage is distributed across 5 papers.

A Level Physics Weightage 2026-27

Topic Area	Weightage (%)
Mechanics & Fields	35-40%
Electricity & Thermal	25-30%
Nuclear & Astrophysics	20-25%
Practical Skills	15%

Note: Weightage may vary. Please check with your Cambridge school for exact distribution.

A Level Chemistry Weightage 2026-27

Topic Area	Weightage (%)
Physical Chemistry	35-40%
Organic Chemistry	30-35%
Inorganic Chemistry	25-30%
Practical Skills	15%

Note: Weightage may vary. Please check with your Cambridge school for exact distribution.

A Level Biology Weightage 2026-27

Topic Area	Weightage (%)
Cell & Molecular Biology	30-35%
Physiology	25-30%
Genetics & Evolution	20-25%
Ecology & Neurobiology	15-20%
Practical Skills	15%

Note: Weightage may vary. Please check with your Cambridge school for exact distribution.

A Level Mathematics Weightage 2026-27

Paper	Weightage (%)	Topics Covered
Paper 1	17%	Pure Mathematics 1
Paper 2	11%	Pure Mathematics 2
Paper 3	17%	Pure Mathematics 3
Paper 4	11%	Mechanics
Paper 5	11%	Statistics

Note: Students typically take all 5 papers for A Level Mathematics.

Frequently Asked Questions

Which topics have the highest weightage in A Level Science?

In all Science subjects, Paper 4 (Advanced Theory) has the highest weightage (38%). Core topics from AS Level also carry significant weightage.

How is the practical weightage distributed in A Level Science?

Practical skills (Paper 3) contribute 15% of the final grade for Physics, Chemistry, and Biology. Mathematics has no practical component.

How can StudyDecode help me with A Level Science weightage?

StudyDecode provides comprehensive guidance for A Level Science students. We help you understand the weightage, plan your preparation, and focus on key areas for success. Book a free consultation to know more.