Grade Boundaries and What They Mean

Grade boundaries are where a raw mark becomes a letter grade, and in 0606 they move every session. Understanding why, and how to use them, turns a student’s past-paper scores from a source of anxiety into honest, useful feedback.

Why the boundaries move

Cambridge sets boundaries fresh each session to reflect that paper’s difficulty. A harder paper gets lower boundaries; an easier one, higher. This keeps a grade meaning the same standard of achievement across sessions, so the same raw percentage can be an A one session and a B another. That’s why there’s no single fixed mark for an A: the honest answer is always “it depends on the paper”.

Use each paper’s own boundaries

When your child marks a past paper, convert the raw score using that specific paper’s published boundaries, which Cambridge releases alongside the paper. Applying a remembered percentage from a different session gives a misleading grade. The published boundaries for the paper in front of you are the only accurate conversion.

Track the trend, not one score

A single paper is noisy, an unlucky topic or a careless day can swing it. What matters is the trend across several papers: a run of scores shows whether a student is reliably at, above, or below their target grade. One result proves little; five in a row tell the truth.

Read a near-miss as a specific target

Converting to grades also shows how close a near-miss is. Often only a few marks, and one recurring error, separate a B from an A. That reframes a vague “not quite there” into a concrete goal: fix this repeated slip, secure these particular marks. Combined with knowing where the marks sit, it tells a student exactly where the next grade is hiding. A specialist can turn that gap into a focused plan. A trial class can start it. Message us on WhatsApp to book.