Is IGCSE Physics Hard?

Honest answer: IGCSE Physics 0625 is moderately hard. It is harder than most subjects to wing, easier than most to train. The content is finite and the exam is predictable, but it punishes vague understanding in a way memorisation-heavy subjects do not. Whether you will find it hard depends on three specific skills, not on some general physics talent. Here is where the difficulty actually lives.

What makes IGCSE Physics hard?

Three things, in order of how many marks they cost.

1. Calculations, especially multi-step ones. Around 40% of marks across Papers 2 and 4 involve numbers. The syllabus carries roughly three dozen equations, and the Extended paper expects you to select, rearrange and chain them: find kinetic energy, convert it to potential energy, extract a height. Each step is simple. The chaining is what students fail. Add unit conversion traps (grams to kilograms, cm³ to m³, kilometres per hour to metres per second) and a student with sound concepts can still bleed marks on every page. Note also that 0625 uses $g = 9.8\ \text{N/kg}$ as standard, while some questions specify $10\ \text{N/kg}$; using the wrong one costs the answer mark.

2. Paper 6, the Alternative to Practical. This paper is hard for a sneaky reason: schools often barely prepare students for it, yet it carries 20% of the grade. It tests experimental judgement: reading scales to the right precision, plotting and drawing best-fit lines, identifying sources of error and matching specific improvements to them. None of that is in the textbook chapters students revise. Untrained students routinely score 50% on Paper 6 while scoring 75% on theory; trained students find it the easiest paper, because the same question patterns recur every session.

3. The 6-mark extended responses. Papers 3 and 4 end several questions with a point-marked 6-marker: explain electromagnetic induction, describe how a transformer works, explain thermal energy transfer in a scenario. These demand a logical cause-to-effect chain in precise language. Students who “understand it but can’t explain it” discover that the exam only pays for the explaining. This is the gap between a B and an A* more often than any content topic.

By topic, the consistent strugglers are electromagnetic effects (induction and transformers), Extended momentum, and gas pressure-temperature reasoning. By skill, it is always the three above.

Who finds IGCSE Physics hard?

Difficulty is not evenly distributed. The students who struggle most fit recognisable profiles.

Students with shaky algebra. If rearranging $v = f\lambda$ for $f$ feels uncertain, every calculation question starts with a handicap. The good news: the maths in 0625 is a short list of rearrangement, ratios, gradients, standard form, significant figures. It is fixable in weeks, separately from the physics.

Memorisers. Students whose method is “learn the notes, repeat the notes” often hit a wall around grade C/B. Physics questions disguise familiar ideas in unfamiliar contexts: a suggest question about a falling raindrop is really terminal velocity. The required skill is transfer, and it only develops through varied past-paper practice, not re-reading.

Students who avoid being wrong. Physics improvement runs through marked failure: attempt, mark harshly, fix. Students who only do questions they can already answer feel productive and stay still.

Conversely, students comfortable with Maths usually find Physics the most predictable IGCSE science: fewer facts than Biology, more reusable patterns than Chemistry. Many A* Maths students rank Physics their easiest science by the end.

Is Extended Physics much harder than Core?

Meaningfully, yes, but the comparison is not just difficulty, it is ceiling. Core (Papers 1 and 3) caps your grade at C; Extended (Papers 2 and 4) opens A* to E. Extended adds the Supplement content: momentum, gas laws and the Kelvin scale, latent heat, the lens and critical angle work, star life cycles, and deeper electromagnetic theory. It also asks longer calculation chains and more explain-style questions.

For a student currently around grade D, Extended is a genuine risk: fall below the E boundary and the result is ungraded. For a student at C or above, Extended is usually the right call, because the C ceiling closes doors: A-Level Physics courses and many college programmes expect Extended grades. Decide on evidence: a timed Core and Extended past paper, compared honestly, settles most cases.

How long does it take to get better at physics?

Faster than most struggling students believe, with the right kind of work. Realistic timelines, assuming around four focused hours per week:

• 2-3 weeks: Paper 6 technique transformed. The graph checklist, precision rules and error-improvement pairs are pure technique, and they move that paper’s score within two or three practice papers.
• 6-8 weeks: calculations reliable. Equation recall, rearrangement drills and a fixed equation-substitute-answer-with-unit routine remove most calculation losses.
• 8-12 weeks: one full grade, for most students, when weekly past-paper work is marked against real schemes and errors are retried. This matches what we see across our own students.
• A term or more: two grades, or repair of deep gaps from earlier years.

The work type matters more than the hours. Ten hours of note-reading moves almost nothing. Ten hours of timed questions, harsh marking and 48-hour retries moves grades. Where a tutor accelerates this is diagnosis: knowing within one lesson whether the problem is algebra, language or knowledge, then drilling only that. It is exactly what our specialists do in 1-to-1 online classes, and the free 1-hour trial lesson is a real taught class on a past paper, not a syllabus tour, so you can see whether your child is comfortable with the tutor first.

So should the difficulty put you off?

No, but it should change how you work. IGCSE Physics is hard to bluff and easy to train. The exam reuses the same equation types, the same Paper 6 patterns and the same 6-mark structures every session, which makes it one of the most preparation-responsive subjects on the timetable. Students who train the three hard skills deliberately (calculations, Paper 6, extended responses) regularly overtake “naturally good at physics” classmates who never practise under exam conditions.

Hard? Moderately. Beatable on a schedule? Demonstrably. Start with one timed past paper this week, mark it harshly, and you will know precisely which of the three difficulty sources is yours.