How Hard Is A-Level Physics? An Honest Guide to the Maths, the Papers and the A*

Let me give you the direct answer before the nuance. A-level Physics is genuinely one of the harder A-levels in the English system. It combines a substantial volume of content with significant mathematical demand and a practical component that runs across two years. At the same time, it is not an exclusively elite subject — approximately 41,600 students sat it in England in summer 2025 (or around 44,947 across the UK), and approximately 31.9% achieved A* or A, which is higher than the cross-subject average.

That statistic captures the double nature of how hard A-level Physics is. Students who are well-prepared — specifically, who have solid algebra and who have done enough past-paper practice — tend to do very well. The polarisation comes because the subject has a harder floor than most: the pass rate of 95.4% is lower than the all-subject average of 97.5%, meaning a somewhat higher fraction of students fail to pass compared with less mathematically demanding subjects.

The content itself — mechanics, fields, waves, quantum — is intellectually rich but learnable. I have taught students who were not natural scientists but who had strong algebra and excellent exam technique, and they achieved A grades. I have also taught extremely curious students who loved the physics but whose algebra let them down. The maths is the decisive factor more often than any other.

The step up from GCSE to A-level is steep across most subjects, but in Physics the gap has a particular character. At GCSE — whether Combined Science or Triple — the exam boards provide a formula sheet and the questions typically ask for a single formula application. At A-level, the formula sheet still exists but the questions demand far more: identifying which principle applies, selecting the right combination of equations, rearranging them, substituting correctly, and then expressing the answer with appropriate units and significant figures.

The depth of treatment roughly triples. A GCSE topic like “waves” expands at A-level to include superposition, stationary waves, diffraction gratings, the Young double-slit experiment with quantitative treatment, polarisation and refraction with Snell's law. A GCSE topic like “electricity” grows to include internal resistance, potential dividers, I-V characteristics and EMF. And entirely new territory opens up: gravitational and electric fields as inverse-square relationships, quantum mechanics at an introductory level, and capacitor discharge as an exponential process.

For students coming from the combined science GCSE, the jump can feel sharper because they covered only two-thirds of Triple Science. That is not a barrier — it is normal, and most sixth forms cover the assumed knowledge in the first few weeks. But it is worth knowing in advance.

Practically, what this means is that the early weeks of A-level Physics feel deceptively manageable (mechanics is familiar) and then the difficulty curve steepens sharply in year two when fields, capacitors and nuclear physics arrive. Students who coast through year one without strengthening their algebra tend to hit a wall at that point.

All A-level Physics courses are linear: the exams are sat at the end of Year 13 in a single May/June series, with no module resits along the way. The underlying physics content is set by the DfE subject criteria and is very similar across boards. The differences lie in the number of papers, their weighting, and whether there is an optional topic section. The table below shows the AQA (7408) structure, which is the most widely taken board with approximately 20,500 candidates in 2024 — check the specification page of your own board for exact details.

A few differences worth knowing if you are comparing boards. Edexcel (9PH0) has three papers totalling 300 marks, with Paper 3 (General and Practical Principles, 2 hours 30 minutes) carrying 40% of the total — the largest single component across any board. Edexcel has no optional topics; all 13 topics are compulsory. OCR A (H556) uses three papers at 2 hours 15 minutes for Papers 1 and 2, with Paper 3 (Unified Physics, 1 hour 30 minutes) being synoptic and drawing on all modules. There are no optional topics in OCR A either. The AQA Paper 3 optional topic is a genuine choice that students should make thoughtfully — Astrophysics is the most popular, but the Engineering Physics option suits students intending to study engineering at university.

Every student who sits A-level Physics will have two things on their certificate: an overall letter grade (A*, A, B, C, D or E) from the written exams, and a separate practical endorsement result. The endorsement is reported as Pass or Not Classified only. There is no numerical score, no percentage and no grade letter. Critically, it does not affect the letter grade — which is determined entirely by the written papers. A student who achieves A in the written exams receives an A on their certificate regardless of whether they passed or failed the endorsement.

That said, most university physics and engineering admissions tutors expect a Pass. Failing the endorsement does not directly affect your grade, but it does appear on the certificate and may prompt questions at admissions stage.

To achieve a Pass, students must complete a minimum of 12 required practical activities across the two-year course and be assessed by their teacher against the five Common Practical Assessment Criteria (CPAC): following written procedures; applying investigative approaches; safely using equipment and materials; making and recording observations; and researching, referencing and reporting. All five must be demonstrated competently.

One group faces particular challenges: private candidates who do not attend a school or college in the normal way. The endorsement requires assessment by a centre's teaching staff against CPAC criteria, so private candidates need to find a school or college willing to admit them for practical lessons and assessment. This is worth resolving well before Year 13 begins.

Ofqual mandates that at least 40% of marks across A-level Physics written papers require mathematical skills at GCSE Higher level or above. This figure is stated in both the AQA and Edexcel specifications. In practice, AQA papers often sit somewhat above this threshold, which means that in a typical paper, close to half the available marks involve a calculation or a mathematical process. The specific mathematical skills required by AQA's specification include:

• Multi-step algebra: rearranging equations including non-linear forms; solving for an unknown through two or three steps; dimensional analysis.
• Logarithms and exponentials: required for capacitor discharge (Q = Q₀e^−t/RC) and radioactive decay (N = N₀e^−λt), including using ln to linearise these relationships and interpret log plots.
• Trigonometry: sine, cosine and tangent in degrees and radians; resolving vectors; small-angle approximations (sin θ ≈ θ for θ in radians).
• Graphs: determining gradients and intercepts; plotting log-log and log-linear graphs to test power-law and exponential relationships; interpreting the physical meaning of gradient and area.
• Uncertainties: calculating absolute, percentage and fractional uncertainties; combining them by addition (sums/differences) or percentage addition (products/quotients); identifying systematic and random errors.

Do you need to take A-level Maths alongside Physics?

A-level Maths is not a formal prerequisite for A-level Physics — no DfE or Ofqual regulation mandates it. In practice, however, around 85% of A-level Physics students also take A-level Maths, according to data from Ofqual's analytics platform (cited by 42 Tutoring, January 2024). This co-take rate is the highest of any A-level pairing, and it exists for a straightforward reason: the algebraic manipulation, logarithm work and graph analysis that A-level Physics demands are exactly the topics that A-level Maths develops. Students doing both subjects are reinforcing the same skills simultaneously in two different contexts, which is a genuine advantage.

For university, A-level Maths is effectively non-negotiable alongside Physics for any science or engineering degree. Oxford requires A*A*A including Mathematics and Physics, with the two A*s in any two of: Mathematics, Physics, or Further Mathematics for Engineering Science. Most Russell Group universities list A-level Maths as essential for Physics, Engineering, Materials Science and Astrophysics degrees. Our guide to how hard A-level Maths really is will help you decide whether taking both is realistic for your child.

If you are not taking A-level Maths

Some students take Physics without Maths — for example, because their timetable only permits three subjects or because they prefer a different third A-level. This is entirely possible, but it requires a deliberate strategy. You need to compensate by building strong algebra habits independently. In lessons, I work through every equation in the specification with students who are not concurrently doing Maths: rearranging each one from scratch, doing so without a calculator where possible, and specifically practising the logarithm and exponential calculations that appear in capacitor and radioactive decay questions. It takes more focused effort, but it is achievable.

The grade data for A-level Physics tells a consistent story across 2024 and 2025. The table below shows the AQA 2025 grade boundaries for the Astrophysics optional topic, as a representative example. Total marks are out of 250.

Two things stand out. First, an A* in Physics requires roughly 72–73% of total marks (182/250 for the Astrophysics option in 2025) — not 90%, which is a common misconception carried over from the old modular system (see the A* section below for how it is actually awarded). Second, the C grade boundary in 2025 was 100 out of 250 — exactly 40%. A student who has revised selectively and has moderate algebra can often reach a C; the A and A* grades are where the returns to genuine exam technique and mathematical fluency become most visible.

The AQA A-level Physics grade distribution in 2025 (approximately 23,500 AQA entries) was: A* 11.2%, A 20.3%, B 19.4%, C 18.3%, D 15.9%, E 10.2%, U 4.7%. Note these figures are AQA board-level data, not a national cross-board total. For comparison, Chemistry A*–A was approximately 32.0% and Biology approximately 27.6% in 2025 — Physics sits between them, with slightly more top grades than Biology but a higher U rate than Chemistry.

In ten years of one-to-one tuition, I have seen the same patterns repeat. Intelligent, curious students who genuinely love physics arrive in Year 13 and are surprised to find themselves below the grade they expected. Here are the most common reasons, in the order I see them:

The A* is awarded differently under the current linear system compared with the old modular one, and the difference matters. Under the old modular system, an A* required achieving grade A overall plus scoring 90% or more of UMS marks specifically on A2 units. Some students found they could “bank” good marks in AS modules and then focus on A2 — that flexibility is gone.

Under the current linear system, there is no 90% threshold on individual papers and no UMS. The exam board sets a single subject-level A* boundary on the total combined mark across all three papers. For AQA Physics (7408), that total is 250 marks. In 2025, the A* boundary (Astrophysics option) was 182/250 — roughly 72.8% of total marks. In 2024 it was 171/250 (68.4%), because that year's papers were slightly harder. The boundary is set using Ofqual's comparable outcomes approach: exam boards use predictions based on students' prior GCSE attainment to estimate the expected percentage achieving A*, then set the raw mark boundary closest to that prediction.

The practical implication: to get an A*, you need to perform consistently well across all three papers. You cannot rely on a standout Paper 1 to carry a weak Paper 2. The students I have seen achieve A* are not those who are brilliant at one topic — they are those who have no obvious weak areas and who pick up marks on every type of question, including the 4-mark “Explain” questions where the mark scheme language is specific and learnable.

Here is the revision sequence I work through with students in the run-up to their exams. These steps are ordered deliberately: each one builds the foundation for the next.

A-level Physics is widely recognised as one of the most versatile A-levels — one that keeps the greatest number of degree options open. (The Russell Group's historic “facilitating subjects” list, which included Physics, was retired in 2019 and replaced by the Informed Choices resource.) The degrees that typically list A-level Physics as essential or strongly preferred include:

• Physics at all universities — essential everywhere.
• Engineering (all disciplines): Civil, Mechanical, Electrical, Aerospace, Chemical. Most competitive universities list Physics as essential alongside Maths. Oxford requires A*A*A including Mathematics and Physics, with the two A*s in any two of: Mathematics, Physics, or Further Mathematics.
• Materials Science and Astrophysics — typically essential.
• Computer Science — varies by institution; some programmes (particularly hardware-focused or AI-hardware courses) list Physics as desirable; most general CS programmes do not require it.

One commonly misunderstood case is medicine. Most UK medical schools require A-level Chemistry and one further science or mathematics. Physics is accepted in that second slot at many schools — including Cambridge, Oxford, Bristol and Edinburgh — but it is not specifically required by any UK medical school. Chemistry plus Biology is the most common medicine combination. If medicine is your child's goal, check each medical school's current requirements directly rather than assuming Physics is necessary. Our guide to choosing the right A-levels covers medicine, engineering and other popular paths in detail.

Who should take it? My honest answer is: students who achieved a strong grade in GCSE Physics or Combined Science (grade 6 or above), who are taking or willing to work hard on algebra, and who have a genuine interest in at least one of the applications — engineering, space, electronics, medicine. You do not need to find every topic fascinating. But you need enough motivation to work through the mathematical demands, because those demands are real and they do not ease off.

If your child is starting the 2026/27 academic year and considering A-level Physics, the science tuition I offer across Oxford includes a free diagnostic first lesson that gives a clear picture of where a student's algebra and physics foundations actually stand before the course begins — which is exactly the right moment to identify and fix any gaps.