What Are Markbands in the IB?
In the International Baccalaureate, markbands are structured performance levels used to assess coursework and examinations consistently. They break assessment criteria into clear bands, typically ranging from A (highest) to E (lowest), with each band describing what work at that level looks like.
Markbands serve two key purposes. For examiners, they ensure fairness and consistency. For students, they act as a roadmap, showing exactly what is required to reach the highest level of performance.
RevisionDojo helps students decode markband language so expectations are no longer vague or intimidating.
Markbands for the Extended Essay (EE)
The Extended Essay is assessed using five criteria:
- Focus and Method
- Knowledge and Understanding
- Critical Thinking
- Presentation
- Engagement
Each criterion is judged using a markband scale, with performance descriptors outlining what distinguishes excellent work from average or weak submissions. Grades range from A (excellent) to E (elementary or poor), and points across all criteria are combined to produce a final EE score.
High-markband Extended Essays demonstrate a sharply focused research question, sustained critical analysis, clear methodology, and thoughtful engagement with the research process. RevisionDojo provides detailed guidance showing how top-band essays align with each criterion and where weaker essays typically fall short.
Markbands for Internal Assessments (IA)
Internal Assessments across IB subjects also rely on markband-based rubrics. While the specific criteria vary by subject, the structure is consistent: performance is assessed against tiered descriptors, with the top band representing the strongest level of achievement.
