How to go from a C to an A at A-level
Dr Lavan Ganeshkumar, PhD · updated 4 October 2026
Going from a C to an A at A-level is realistic, and it is rarely about working more hours. It is almost always about changing what the hours are spent on: understanding the topics you only half follow, then practising exam questions and learning exactly what the mark scheme rewards.
The same plan applies from a D to a B or a B to an A*, just with a different starting point.
Step 1: find out why you lose marks
Take your last two papers or tests and, for every lost mark, write down the cause: did not know it, knew it but could not apply it, used the wrong wording, made a slip, or ran out of time. The pattern tells you what to fix. Most students on a C find that a few topics and one or two habits account for most of the lost marks.
Step 2: understand, do not re-read
If the cause is not understanding, more notes will not fix it. Learn the topic from a clear explanation, then close it and explain it from memory. If you cannot say why something happens, you do not understand it yet.
Step 3: questions, marked honestly
Do exam questions on the topic without notes, then mark them against the official mark scheme. Write down the exact phrase you missed each time you lose a mark. In the sciences, mark schemes award specific wording, so the same terms recur across papers.
Step 4: repeat on a schedule
Revisit each topic after a few days, then after a few weeks. Redo the questions you got wrong. Progress shows up as fewer repeated mistakes, which is a better measure than hours studied.
How long it takes
Expect to see the first improvement in practice marks within a few weeks of studying this way, and a grade change over a term or two of consistent work. A grade does not move because of one big revision weekend.
Where Trayna fits, and where it does not
Trayna is a 24/7 online tutor in your pocket, on your tablet and on the web. Dr Lavan teaches you the topics in the app any time, anywhere, and an adaptive plan reinforces them each day from now to your exam. It is there for students who cannot afford 1-to-1 tutoring, and it is built to act like a 1-to-1 tutor: it teaches, it checks, and it adapts to how you are doing. The aim is that you really understand the subject and are prepared for it, not just that you have revised it. It is A-level only, for Maths, Chemistry, Physics and Biology. Maths follows Edexcel; Chemistry, Physics and Biology follow AQA.
The loop above is how Trayna teaches: Dr Lavan explains the topic, you answer questions straight away, wrong answers are noted and come back later.
It is for both Year 12 and Year 13. Year 13 students already use it, and Year 13 topics are being added as current students need them while Year 12 is the most complete, so check your topics in the app. If you only want free past papers, PMT does that better than we do, and we would rather you used it.
Common questions
How do I improve from a C to an A at A-level?
Work out why you lose marks, learn the topics you only half understand, practise exam questions without notes and mark them against the official scheme, and revisit each topic on a schedule. The change is in how you study, not just how long.
Is it possible to get an A if I am on a C in Year 12?
Yes. Year 12 is the best time to change how you study, because there is still a full year and the topics build on each other. It takes consistent work from now, not a last-minute push.
How long does it take to raise an A-level grade?
Usually a few weeks to see better practice marks and a term or two to see a real grade change, if you study by testing yourself and marking honestly.
I am failing A-level. What should I do first?
Find the three topics where you lose the most marks and learn them properly from the beginning, then start doing questions on them. Ask your teacher where you are losing marks. Fixing a few topics moves a grade faster than spreading thin.
How do I go from a B to an A*?
The gap is usually precision: exact mark-scheme wording, no careless slips, and handling harder unfamiliar questions. Do harder questions, mark strictly, and track repeated errors.
Trayna does this automatically. You enter your subjects, your exam dates and how long you have each day, and it builds the route from today to those exams, then adapts it as you go. Maths follows Edexcel; Chemistry, Physics and Biology follow AQA.
Get Trayna on the App Store · on Google Play
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