A-Level Biology Specification

Compare every exam board's A-Level Biology specification, then jump straight into the full spec and Cognito's free lessons.

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Which board are you?

Exam boards structure Biology differently – different spec codes, paper counts and weightings. Find your board below, then jump straight into the full specification.

Biology specification comparison by exam board
BoardSpec codeExam structureTiers
AQA74023 papers · 2h each · varied marksWeighting 35% / 35% / 30%Untiered
Edexcel9BN03 papers · 2h each · 100 marks eachWeighting 33.33% eachUntiered
Edexcel IALYBI116 papers · varied lengths · varied marksWeighting 20% IAL / 40% IAS / 20% IAL / 40% IAS / 10% IAL / 20% IAS / 20% IAL / 40% IA2 / 20% IAL / 40% IA2 / 10% IAL / 20% IA2Untiered
OCRH4203 papers · varied lengths · varied marksWeighting 37% / 37% / 26%Untiered
CIE97005 papers · varied lengths · varied marksWeighting 15.5% / 23% / 11.5% / 38.5% / 11.5%Untiered
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