Skip to content
IB grade calculator

What grade is my IB Biology SL score?

Enter your score to see your grade.

Biology SL Paper 1 grade boundaries

The lowest mark for each grade, out of 55.

Session1234567
May 20260111622283541
May 20250111925303641
November 2024081114182226
May 2024081113151719
November 2023081012172227
May 2023081012151922
November 2020081013172125
November 2019081114192328
May 2019081114172023
November 2018081114182226
May 2018081113162023
May 2017081013162024

From the IB's published grade boundaries. Sessions with several time zones show their average. The IB sets this boundary across two papers together, so treat it as a guide. Your final grade also depends on your other papers and coursework.

Log your past papers and see your grade, your trend and your weakest topics automatically.

Track your own papers free