What Counts as “Failing” an IB Science Paper?
In the IB grading system, subjects are scored on a scale from 1 to 7, with 4 considered a passing grade. A score of 3 or below is generally regarded as failing.
However, it’s important to separate failing a paper from failing a subject.
IB science subjects (such as Biology, Chemistry, or Physics) are assessed using multiple components:
- Paper 1
- Paper 2
- Paper 3
- Internal Assessment (IA)
Failing one paper—for example, Paper 2 in Biology HL—does not automatically mean you fail the subject. Your final subject grade is calculated from all components combined. Strong performance in other papers or the IA can compensate for a weak exam paper.
Can You Still Earn the IB Diploma With One Failed Science Paper?
Yes. You can still earn the full IB Diploma even if you perform poorly on a single science paper, provided you meet the overall diploma requirements set by the International Baccalaureate.
To be awarded the diploma, you must meet all of the following conditions:
- At least 24 total points
- At least 12 points across your three Higher Level subjects
- No more than one grade 2 overall and no grade 1
- No E in Theory of Knowledge (TOK) or the Extended Essay (EE)
- CAS fully completed
This means a student could score a and still pass the diploma, as long as the remaining grades and core requirements compensate.
