Edexcel SNAB A Level Biology Grade Boundaries: Every Year (2016 to 2025)
Since the current Edexcel A Level Biology A (Salters-Nuffield) specification began, the A* boundary has ranged from 185 out of 300 (November 2021) to 225 out of 300 (June 2025). Every series is below, with a link to the full boundaries for each paper.
Edexcel SNAB AS Biology Grade Boundaries June 2016 (8BN0)
In June 2016, the first series of the current specification, an A in Edexcel AS Biology A (Salters-Nuffield) (8BN0) needed 86 marks out of 160 (54%) and an E needed 47 (29%). The first A level (9BN0) exams were in June 2017.