It’s often difficult to find the A-level biology grade boundaries and exam dates all in one place, so I hope this is helpful. 🙂
Grade boundaries for the 2025 A-level biology exams
AQA A-level biology grade boundaries:
Based on 2024 AQA A-level biology results
A* 74% (192/260 marks), 63% A (165/260), 54% B (140/260), 44% C (115/260) (scores rounded to nearest mark)
2023 grade boundaries
A* 69% (180/260 marks), 59% A (153/260), 48% B (125/260), 38% C (98/260)
Edexcel (Salters Nuffield) A-level biology grade boundaries:
Based on 2024 Edexcel A-level biology results
A* 66% (199/300 marks), 57% A (171/300), 48% B (144/300), 39% C (117/300) (scores rounded to nearest mark)
2023 results
A* 74% (222/300 marks), 64% A (192/300), 54% B (162/300), 44% C (132/300)
OCR A-level biology grade boundaries:
Based on 2024 OCR A-level biology results
A* 68% (187/270 marks), 57% A (160/270), 48% B (136/270), 39% C (112/270) (scores rounded to nearest mark)
2023 results
A* 68% (183/270 marks), 57% A (155/270), 48% B (130/270), 39% C (106/270)
Exam dates for the 2025 A-level biology exams
AQA A-level biology (based on this page)
Paper 1 – 5th June pm (2 hours)
Paper 2 – 13th June am (2 hours)
Paper 3 – 18th June am (2 hours)
Edexcel Biology A (Salters Nuffield) (Based on this page)
Paper 1 – 5th June pm (2 hours)
Paper 2 – 13th June am (2 hours)
Paper 3 – 18th June am (2 hours)
OCR A (Based on this page)
Paper 1 – 5th June pm (2 hours 15 min)
Paper 2 – 13th June am (2 hours 15 min)
Paper 3 – 18th June am (1 hour 30 min)
Good luck! Hope these help 🙂
Best wishes,
John
Dr John Ankers
Specialist online A-level biology tutor and academic wellbeing coach
