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Exam boards structure Combined Science: Trilogy differently – different spec codes, paper counts and weightings. Find your board below, then jump straight into the full specification.
| Board | Spec code | Exam structure | Tiers |
|---|---|---|---|
| AQA | 8464 | 6 papers · 1h 15m each · 70 marks eachWeighting 16.7% each | Foundation & Higher |
| Edexcel | 1SC0 | 6 papers · 1h 10m each · 60 marks eachWeighting 16.67% each | Foundation & Higher |
| Edexcel IGCSE | 4SD0 | 3 papers · 2h each · 110 marks eachWeighting 33.3% each | Untiered |
| Cambridge IGCSE (CIE) | 0653 | 6 papers · varied lengths · varied marksWeighting 30% / 30% / 50% / 50% / 20% / 20% | Core & Extended |
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AQA GCSE Combined Science: Trilogy
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