GCSE Biology grade boundaries

Every exam board's GCSE Biology boundaries side by side. The mark you need depends on your board and tier – the same grade can sit at a different percentage on each.Latest series: June 2026 · Sources: AQA, Edexcel (Pearson), Edexcel International GCSE (Pearson), OCR Gateway (A), OCR 21st Century (B), Cambridge IGCSE (CIE), SQA National 5

Find your GCSE Biology grade boundaries

Which exam board?

Find your GCSE Biology grade boundaries

Boards compared

Boards compared – June 2026, Higher tier

Boards compared – June 2026, Higher tier
BoardMax markGrade 9Grade 7Grade 5Grade 4 (pass)
AQA200133 (67%)107 (54%)70 (35%)52 (26%)
Edexcel200170 (85%)147 (74%)105 (53%)84 (42%)
OCR Gateway A180141 (78%)121 (67%)86 (48%)69 (38%)
OCR 21st Century B180138 (77%)110 (61%)72 (40%)53 (29%)

Raw marks on each board's Higher tier total (AQA and Edexcel out of 200; OCR Gateway A and OCR 21st Century B out of 180). Percentages are of each board's own total, so they compare fairly. Boards whose grades depend on an exam option, or that don't use 9–1 grades, aren't shown.

Boards compared

Pick your board

GCSE grade boundary pages by subject and exam board
SubjectAQAEdexcelEdexcel AEdexcel BEdexcel IGCSEOCROCR AOCR BCambridge IGCSE (CIE)SQA National 5
BiologyAQAEdexcel——Edexcel IGCSE—OCR AOCR BCambridge IGCSE (CIE)SQA National 5
Pick your board

Frequently asked questions