IB Diploma grade boundaries for 2026 use the standard 1–7 scale for each subject. The IB sets grade boundaries after each examination session so that standards remain consistent globally. Your total Diploma score (up to 45 points) includes six subjects plus Theory of Knowledge (TOK) and the Extended Essay (EE).
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IB vs IGCSE: Detailed ComparisonIB Diploma 1–7 Subject Scale (2026)
Grade scale for each IB subject; boundaries are set per session
| Grade | Meaning |
|---|---|
| 7 | Excellent |
| 6 | Very good |
| 5 | Good |
| 4 | Satisfactory |
| 3 | Mediocre |
| 2 | Poor |
| 1 | Very poor |
2026 subject boundaries
Subject-specific grade boundaries for the May and November 2026 sessions are published by the IB after each session. Raw marks are converted to the 1–7 scale using these boundaries so that standards are consistent across sessions and regions.
Diploma Points: TOK & Extended Essay
Up to 3 bonus points from TOK and EE combined
Total Diploma score
Six subjects give 6 × 7 = 42 points. Theory of Knowledge and the Extended Essay are graded A–E and combined to add 0–3 points. Maximum Diploma score is 45 points. Passing the Diploma requires meeting subject, TOK/EE, and overall point requirements.
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IB vs Cambridge: Which is Harder?Raw Marks, Grade Boundaries & the IB 1–7 Scale
How the IB turns examination performance into subject grades and a total out of 45 points.
From raw mark to 1–7 and 45 points
IB examiners first award a raw mark in each subject component. The IB then sets grade boundaries so that raw marks are converted to stable 1–7 grades for each subject and level (SL / HL).
Six subjects can give up to 42 points. Theory of Knowledge and the Extended Essay are graded A–E and combined to add 0–3 bonus points, giving the maximum 45 points. Behind the scenes, the same logic applies as with Cambridge or Edexcel: raw marks → boundaries → scaled grades.
How the IB Sets Grade Boundaries
Consistent global standards
Fair grading
The IB uses statistical analysis and senior examiner judgment to set grade boundaries each session. This keeps standards consistent so that a grade 7 in 2026 represents the same level of achievement worldwide.
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