Short answer

A in IGCSE has no fixed percentage.* Grade boundaries are set after each exam series and vary by subject and year. A* is the highest grade and typically requires a high percentage (often 90%+ in raw marks, but this varies).

How A* works

• Grade boundaries: Set by Cambridge and Pearson after each exam session
• Subject-specific: Maths, English, and sciences can have different boundaries
• No universal %: A* threshold depends on exam difficulty and cohort performance
• Typical range: Often 90%+ for A*, but check the published boundaries for your subject and series

Where to find boundaries

• Cambridge: Grade threshold tables published after each series
• Pearson Edexcel: Grade boundaries published on their website
• Your school: May provide estimated boundaries for planning

Practical takeaway

Don’t aim for a fixed percentage—aim for strong understanding and exam technique. Past papers and examiner reports help. See our top 10 tested topics for revision focus.

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