Be honest about the 28th script. The final value on the projectile question is wrong — but is it wrong because the student doesn’t grasp that horizontal and vertical motion are independent, or because they carried through a velocity component miscalculated three lines earlier and resolved, substituted and rearranged everything else correctly? The Cambridge scheme has an answer: credit the physics, follow the error through, award the marks the working earned — and don’t award the final value at all if the unit is missing. A tired marker scanning for a boxed number does none of that, and that gap between what a student demonstrated and what they were credited is where Cambridge International A Level Physics 9702 mark scheme marking lives.

This guide is about marking 9702 the way the Cambridge scheme intends — crediting marking points, following calculation working through an early slip, insisting on the unit — and where software holding the scheme steady across a class set frees you up without taking your judgement off the desk.

What the 9702 mark scheme is actually built from

Cambridge International AS & A Level Physics (9702) runs across the AS year and the full A Level, assessed through several components: a multiple-choice paper, structured theory papers, and a practical-skills element — a hands-on practical or an alternative-to-practical paper depending on the route. Exact paper counts, durations and weightings change between syllabus versions, so check the current specification. What’s stable is the style of the marking, and it’s mostly point-based:

• Marking points — most marks go to specific, creditable statements or values. A four-mark structured question is usually four discrete points: a correct statement of a law, a correct resolved component, a correct substitution, a correct final value with its unit. You award what’s present against the listed points, not an impression.
• Calculation marks — numeric questions credit the working, not just the result. Resolving a vector, choosing the right equation of motion, rearranging and substituting cleanly earn marks even when the final arithmetic slips — the scheme typically separates a method/substitution mark from the final-answer mark.
• Extended/quality-of-response marks — the longer “explain” and “suggest” questions reward a developed chain of reasoning: why a body in circular motion accelerates though its speed is constant, why a radioactive source’s count rate falls as it does. Some are judged more holistically than a flat tick-list, and that judgement is where consistency is hardest to hold.

Layered on top are the conventions that decide the edge cases, exactly where hand-marking drifts: ecf (error carried forward), where a later step is marked correct relative to an earlier wrong value; acceptable-answer ranges (to a sensible number of significant figures); the requirement that a unit be present and correct — including derived and compound units — before the final mark; and reject-lists for the plausible misconception that must not score. Apply these by feel at 10pm and two near-identical scripts score differently.

Where physics marking drifts — and why it’s not carelessness

On the first few scripts you trace every line of a kinematics or gravitational-field calculation and award the marks ecf deserves. Two-thirds through, if the final value is wrong the temptation is to zero the whole calculation and move on. Error-carried-forward is the first casualty — a student who resolved one force component wrong early and then executed the dynamics perfectly should keep most of the marks, and tired marking takes them.

Units and significant figures drift the other way. Fresh, you withhold the final-answer mark when the unit is missing; on the 28th script you let a bare number through, and the reject-list slackens — “the field is stronger” earning a point that needs “the gravitational field strength increases as the separation decreases.” None of this is a competence problem; it’s the predictable result of applying a detailed, multi-point scheme — across mechanics, waves, electricity, fields, oscillations, quantum and nuclear physics — to a stack of scripts in one sitting. You can mitigate it but not eliminate it, because the limit is human attention. This is the drift covered for every subject in the parent guide on marking to the Cambridge mark scheme online for class consistency — 9702 just makes the stakes concrete, because the credit hides in working, units and gradients a tired eye skips.

What “marking to the scheme online” changes for 9702

When 9702 marking happens online against the Cambridge scheme, the point-by-point logic is applied the same way to every script: the valid first step of a circular-motion or capacitor-discharge calculation earns its mark on the last script as reliably as the first, and error-carried-forward, the unit requirement, the significant-figure tolerance and the accept/reject line on a definition are held level rather than slackening by script 28.

The honest scope: this consistency is strongest on the structured, point-based items and calculation questions that make up much of a 9702 paper — the state-this, resolve-that, calculate-the-acceleration items where the marking points are well defined. The extended “explain” and “suggest” answers still want your eyes; treat automated marking there as a consistent first pass, then review. And the hands-on practical component is assessed in the lab, not online — the data-handling and analysis parts can be marked to the scheme, but the practical performance stays with you.

A 9702-specific marking workflow

1. Let it mark the structured recall and calculation questions to the scheme. Definitions and statements of laws, vector resolution, equations of motion, work-energy-power sums, circuit, field and capacitance problems, decay calculations — with marking points, error-carried-forward, units and significant figures applied uniformly.
2. Check that method marks are landing, not just final values. Spot-check scripts where the final answer is wrong to confirm the substitution and rearrangement marks were awarded.
3. Review the extended-answer physics yourself. The derivations, the “explain why” reasoning chains, anything judged on a developed argument — these get a consistent first pass; you read and override where a valid, unanticipated line of reasoning deserves credit.
4. Glance at every total near a grade boundary. A couple of ecf or unit marks can move a grade; never skip them.

Why consistent physics marking matters beyond the time saved

The faster-marking argument is real, but it’s the smaller one. The bigger payoff is that your data becomes trustworthy. When 9702 questions are marked to one standard across the class, a topic that looks weak in your analytics — dropped marks on the double-slit, or on resolving forces on an inclined plane — is signal, not the artefact of marking that question last. You can re-teach with confidence.

It also makes your marks defensible: when a parent asks why their child scored below a friend on near-identical working, “the same marking points, follow-through and unit requirement applied to both” is something you can stand behind.

How this looks on the platform

Tutopiya’s Cambridge A Level Physics 9702 resources mark structured 9702 questions against the Cambridge mark scheme — marking points, calculation working, error-carried-forward and the unit requirement applied the same way to every script — with a review-and-override step so the extended-answer physics stays your call, and the topic-level analytics built on level marking are trustworthy. It’s free to start with one class, no school sign-up. You can also see the whole teacher platform these guides put to work.

This is one of four 9702 guides for teachers. The others cover the 9702 past-paper question bank, building a 9702 mock exam, and 9702 lesson resources.

FAQ

Does automated marking credit calculation working when the final answer is wrong? On structured 9702 calculation questions, yes — that’s the point of marking to the scheme rather than to the answer. A correct resolved component, equation choice or substitution earns its mark even when a later slip costs the final value, and error-carried-forward credits the steps after an early mistake. Still spot-check that those method marks are landing where the final answer is wrong.

Does the marking enforce units and significant figures? It should. Marking to the Cambridge scheme typically requires the correct unit — including compound and derived units — and a value to a sensible number of significant figures before the final-answer mark, exactly the conventions a tired marker lets slide.

How is marking physics different from marking an essay subject online? 9702 marking is mostly point-based: specific marking points for statements, values and resolved quantities, plus calculation working. The extended “explain” answers are judged on a developed chain of reasoning, but there’s no levels-of-response essay band as in History or Literature — so the structured questions fit consistent automated marking, while your judgement stays on the longer physics reasoning.

What about the practical or alternative-to-practical component? The hands-on practical work — handling apparatus, taking live readings, judging measurement technique — is assessed in the lab, not by online marking. The data analysis, graph-plotting and calculation parts of practical-skills questions can be marked to the scheme; the practical performance stays with you. Hedge any exact weighting against the specification.

Do I lose control of the marks? Only if you pick a tool without a review step. The model is consistent-first, teacher-final: structured recall and calculation questions marked uniformly to the scheme, and you review and override the extended-answer physics and any borderline total.

The bottom line

Marking 9702 well means crediting marking points and calculation working — following an early error through rather than zeroing a whole calculation, still insisting on the unit and a sensible accuracy — and holding the accept/reject line the same way on every script, which a tired marker can’t sustain across a class set. Let consistent online marking hold the structured and calculation questions steady, keep your judgement for the extended physics, and your marks become fairer to students and trustworthy as data.

Mark your 9702 class to the scheme — consistently, free with one class →

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