How to Get an A* in IGCSE Physics (0625): Precision, Practicals & Every Mark

Physics (0625) is a subject where students who understand it still lose the A* — not because they don’t know the content, but because Physics punishes imprecision. A missing unit, a rounded intermediate value, a definition that’s “basically right” but not in the syllabus’s words: each one quietly costs a mark. This guide shows you how to close that gap and turn understanding into stars.

1. Tier check: you need Extended

2. What an A* in 0625 actually takes

As with every IGCSE, the exact A* mark is set after the exam and moves with the paper’s difficulty. On Extended it usually sits around the low-to-mid 80s. You don’t need to be flawless — you need to stop the small, repeated precision errors that keep an understanding-strong student stuck on an A.

3. The method: past papers, marked hard

1. Practise by topic, then full papers
   Drill one topic’s questions until the method is automatic, then sit whole Paper 2 and Paper 4 papers under timing.
2. Mark against the scheme — strictly
   Physics mark schemes are precise about units and wording. Mark yourself the way an examiner would, not generously.
3. Log every lost mark by type
   Knowledge gap, calculation slip, or a units/definition/precision error? For most A*-hopefuls, it’s that last bucket — and it’s the fastest to fix.

4. Precision: where A* marks are won and lost

The precision habits that separate an A* from an A:

• Always write units — a correct number with no unit often scores zero.
• Round only at the end, to 3 significant figures unless told otherwise. Carrying rounded intermediate values loses accuracy marks.
• Show every step — method marks are awarded even if the final number is wrong.
• Match the command word — “state” wants a fact, “describe” wants what happens, “explain” wants why.

5. The topics that decide an A* in 0625

6. Don’t sleep on the practical paper

Whether you sit Paper 5 (Practical Test) or Paper 6 (Alternative to Practical), the experimental skills are some of the most predictable marks on the whole qualification — the same skills come up every session:

1. Reading instruments
   Measuring accurately and quoting values with the right precision and units.
2. Tables & graphs
   Sensible axes and scales, plotting accurately, drawing a best-fit line, and calculating a gradient.
3. Errors & precautions
   Identifying sources of error and stating sensible improvements — classic, repeatable marks.
4. Planning
   Describing a fair method with the right variables controlled.

7. A focused 4-week 0625 plan

1. Week 1 · Diagnose
   One full Paper 4, timed. Mark it strictly and list every units/definition/topic error.
2. Week 2 · Topic & precision blitz
   Attack weak topics and drill the precision habits — rearrange, units, sig figs, definitions.
3. Week 3 · Full papers + practical
   Timed Paper 2 + Paper 4, plus at least one past Paper 5/6 practical paper.
4. Week 4 · Polish
   Re-do your error-log questions and memorise definitions. One final timed paper.

8. For students across the Middle East

• Board check: most Gulf schools sit Cambridge 0625; some sit Edexcel International GCSE Physics (graded 9–1). Revise from your board’s papers.
• Practical route: many regional centres use Paper 6 (Alternative to Practical) — confirm yours and practise that exact paper.
• University: Physics is a key subject for engineering and medicine pathways in the region — a strong 0625 grade carries real weight for admission and equivalency.

FAQ

Physics rewards the precise. Get on the Extended tier, drill the high-frequency topics, respect units and definitions, and don’t skip the practical paper — do that and your understanding finally shows up as an A*.