The IB 1–7 scale

Each IB subject is graded from 1 (lowest) to 7 (highest). Grade descriptors describe the quality of work at each level. Actual marking uses subject-specific criteria; these descriptors give a general picture.

Grade 7 — Excellent

• Sophisticated understanding
• Convincing, detailed independent analysis
• Well-developed expression with very good accuracy and clarity
• Effective structure with relevant support

Grade 6 — Very good

• Strong understanding
• Mainly convincing responses with good detail
• Well-developed expression, good accuracy
• Effective structure with relevant support

Grade 5 — Good

• Good understanding
• Generally valid analysis and evaluation
• Good expression, adequate accuracy
• Clear structure with relevant support

Grade 4 — Adequate (satisfactory)

• Adequate knowledge
• Generally valid analysis
• Satisfactory expression, some lapses
• Basic structure

Grade 3 — Satisfactory (limited)

• Some knowledge and understanding
• Responses sometimes valid
• Some appropriate expression
• Limited development, some structure

Grade 2 — Poor

• Limited understanding
• Weak development
• Inadequate expression

Grade 1 — Very poor

• Minimal evidence of understanding
• Little relevant content

Important points

• Work often shows mixed characteristics; examiners use criteria and boundaries to decide the final grade
• Grade boundaries are set each session and are not fixed in advance
• Subject criteria define exactly what is required; descriptors are indicative

How Tutopiya helps

Tutopiya tutors use IB criteria and grade descriptors to target improvement. Explore IB resources or book a free trial.

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Source: IB Grade descriptors